TW201738478A - Damper device, and fall prevention device - Google Patents

Abstract

A rod configuring this damper device is restricted from rotating with respect to a cylinder. A joint (15) (a linking part) linked to a first base (30A) is provided on one side of the cylinder (11) of this damper device (10), and on the other side, a rod guide (17) having a through-hole (17A) is provided. Inside of the cylinder (11), a piston (16) is arranged which moves in a prescribed direction. The rod (13) is passed through the through-hole (17A) so as to be between the inside and the outside of the cylinder (11); one end of the rod is linked to the piston (16) and the other end thereof is linked to a second base (30B). A restricting unit (80) restricts the rod (13) from rotating relative to the cylinder (11).

Description

Damping device and anti-tip device

The present invention relates to a damper device and an anti-tip device.

Patent Document 1 discloses an anti-tip device using a conventional damper device. The anti-tip device is provided with a damper and a pair of base portions. The damper is mounted between the upper surface of the furniture provided on the floor surface and the ceiling. The pair of base portions are rotatably rotatable about the rotation axis, respectively, at both ends of the shaft damper. One base portion abuts against the upper surface of the furniture, and the other base portion abuts against the ceiling. Therefore, if the furniture tilts in a direction parallel to the rotation direction of the damper due to the swing of the earthquake or the like, the damper rotates around the rotation axis with respect to each of the base portions, and the base portions can be maintained in contact with each other. The state of the upper surface and ceiling of the furniture. Therefore, the anti-tip device can apply the damping force of the damper to the furniture, and can suppress the inclination of the furniture to prevent the furniture from falling over.

[Previous Technical Literature] [Patent Literature]

Patent Document 1: Japanese Patent Laid-Open No. 2015-6330

Anti-tip device of Patent Document 1, contact surface of the ceiling side base portion The shape of the surface (in contact with the ceiling) is elongated and rectangular. In this way, the contact surface of the ceiling-side base portion is configured as an elongated anti-tip device, and the stability of the mounting can be changed by the orientation of the ceiling-side base portion (that is, the orientation of the elongated contact surface). The ceiling side base portion must be set in such a direction that the stability becomes higher.

However, in the damper device used in the anti-tip device of Patent Document 1, the center axis of the rod and the piston coincides with the central axis of the cylinder, and the rod is relatively rotatable relative to the cylinder about the central axis. The composition. That is, the anti-tip device tie rod is freely rotatable about the central axis of the cylinder, and the orientation of the base portion (ceiling-side base portion) connected to the rod is freely changed. When such a damper device is used, the operator must install the rod at the correct rotation angle while adjusting the rotation angle of the rod with respect to the cylinder (for example, the orientation of the ceiling side base portion), and there is an increase in the number of workers. The possibility of work load.

The present invention has been made in view of the above-described conventional circumstances, and provides a damper device and an anti-tip device that can restrict the rotation of the rod portion with respect to the cylinder portion as a problem to be solved.

The damper device of the present invention includes a cylinder portion that is formed in a tubular shape and that extends in a predetermined direction, and is provided with a connection portion that is coupled to the first base portion on one side in a predetermined direction, and is provided in a predetermined direction. A rod guide portion having a through hole portion penetrating therethrough is provided at one side. A piston portion that moves in a predetermined direction is disposed inside the cylinder portion. The rod portion is inserted into the through hole portion and spans the inside and the outside of the cylinder portion, and one end portion is coupled to the piston portion, and the other end portion is coupled to the second base portion. The restricting portion restricts the lever portion from rotating relative to the cylinder portion.

The damper device of the present invention is disposed inside the cylinder portion with a predetermined side In the moving piston portion, the rod portion is inserted into the through hole portion and spans the inside and the outside of the cylinder portion, and one end portion is coupled to the piston portion. Further, the restricting portion restricts the rod portion from rotating relative to the cylinder portion. Since the damper device can be rotated by the rod portion held by the cylinder portion by the restriction portion, the orientation of the first base portion connected to the cylinder portion and the second portion connected to the rod portion can be maintained in a fixed relationship. The orientation of the base portion. Therefore, when the first base portion and the second base portion are attached, there is no large difference in the orientation of the second base portion with respect to the first base portion, and the work load at the time of adjusting the orientation can be reduced.

In the damper device of the present invention, the restricting portion may be configured to restrict relative rotation of the piston portion with respect to the cylinder portion between the piston portion and the cylinder portion.

According to this configuration, it is possible to more reliably restrict the rotation between the cylinder portion and the piston portion that are fitted in close contact with each other.

In the damper device of the present invention, the restricting portion may have an inner peripheral portion of the cylinder portion and an outer peripheral portion of the piston portion. A convex portion that protrudes toward the inner side of the cylinder portion and that extends in a predetermined direction may be formed in the inner peripheral portion of the cylinder portion. A groove portion on the piston portion side that extends in a predetermined direction and is fitted to the convex portion may be formed on the outer peripheral portion of the piston portion.

According to this configuration, the fitting of the convex portion formed on the inner peripheral portion of the cylinder portion and the groove portion on the piston portion side formed on the outer peripheral portion of the piston portion can more reliably restrict the piston portion to the cylinder portion. Relative rotation. Moreover, it is possible to easily form a configuration in which a groove portion is formed on the outer peripheral portion of the piston portion and a convex portion is formed in the inner peripheral portion of the cylinder portion, thereby realizing the restriction portion.

In the damper device of the present invention, the restricting portion may have an inner peripheral portion of the cylinder portion, a peripheral portion of the piston portion, a protruding member protruding from the outer peripheral surface of the piston portion, and a side protruding toward the outer peripheral surface of the piston portion. The additional energy of the component is added to the potential energy. It is also possible to have a configuration in which a cylinder extending in a predetermined direction is formed in an inner peripheral portion of the cylinder portion In the groove portion on the side portion, a hole portion is formed in a peripheral portion of the piston portion, and a protruding member protruding from the hole portion is fitted to the groove portion on the cylinder portion side.

According to this configuration, the fitting of the groove portion on the cylinder portion side formed on the inner peripheral portion of the cylinder portion and the protruding member disposed on the outer peripheral portion of the piston portion can more reliably restrict the piston portion to the cylinder portion. Relative rotation. Moreover, it is easy to ensure the cross-sectional area of the piston portion, and it is advantageous when a valve or the like is provided.

In the damper device of the present invention, the restricting portion may have an outer peripheral portion of the piston portion and an inner peripheral portion of the cylinder portion. The outer peripheral portion of the piston portion may have a non-circular outer surface portion with a cross-sectional outer edge in a direction orthogonal to the predetermined direction. The inner peripheral portion of the cylinder portion may have a non-circular inner surface portion in which the inner edge of the cross section in the direction orthogonal to the predetermined direction is non-circular and is fitted to the outer surface portion of the non-circular shape.

According to this configuration, by forming the outer peripheral portion of the piston portion and the inner peripheral portion of the cylinder portion as a simple structure having a non-circular cross section, the relative rotation of the piston portion with respect to the cylinder portion can be more reliably restricted.

In the damper device of the present invention, the first outer surface portion in which the outer surface is configured as a curved surface and the second outer surface portion in which the outer surface is formed as a flat surface may be provided on the outer peripheral portion of the piston portion. The inner surface of the cylinder portion may be provided with a first inner surface portion and an inner surface which are formed as a curved surface and which are fitted to the first outer surface portion, and are formed as a flat surface and are opposed to the second outer surface portion. The second inner surface portion that extends toward and in a predetermined direction.

According to this configuration, since the outer peripheral portion of the piston portion constitutes the curved surface and the flat surface, and the inner peripheral portion of the cylinder portion constitutes a simple structure of the curved surface and the flat surface, the relative rotation of the piston portion with respect to the cylinder portion can be more reliably restricted. .

In the damper device of the present invention, the inner circumference of the cylinder portion may also have The outer edge of the cross section in the direction orthogonal to the predetermined direction is an elliptical inner surface portion having an elliptical shape. The outer peripheral portion of the piston portion may have an elliptical outer surface portion that is fitted to the inner surface portion of the elliptical shape and has an elliptical outer edge in the cross section orthogonal to the predetermined direction.

According to this configuration, the outer peripheral portion of the piston portion and the inner peripheral portion of the cylinder portion are each configured to have a simple elliptical shape, and the relative rotation of the piston portion with respect to the cylinder portion can be more reliably restricted.

In the damper device of the present invention, a groove portion on the cylinder portion side that is recessed toward the outer side of the cylinder portion and extends in a predetermined direction may be formed in the inner peripheral portion of the cylinder portion. A convex portion on the piston portion side that is fitted to the groove portion on the cylinder portion side may be formed on the outer peripheral portion of the piston portion.

According to this configuration, the groove portion (the groove portion on the cylinder portion side) formed in the inner peripheral portion of the cylinder portion is fitted to the convex portion (the convex portion on the piston portion side) formed on the outer peripheral portion of the piston portion, The relative rotation of the piston portion relative to the cylinder portion can be more reliably limited.

In the damper device of the present invention, the restricting portion may be configured to restrict the relative rotation of the rod portion with respect to the rod guiding portion between the rod portion and the rod guiding portion.

According to this configuration, the relative rotation of the rod portion with respect to the cylinder portion can be directly restricted between the two, and the influence on the other portions due to the restriction can be suppressed.

In the damper device of the present invention, the restricting portion may have a peripheral portion of the rod portion and a through hole portion of the rod guiding portion. The outer peripheral portion of the rod portion may have a non-circular outer surface portion with a cross-sectional outer edge in a direction orthogonal to the predetermined direction. The inner peripheral portion of the through hole portion may have a non-circular inner surface portion in which the inner edge of the cross section orthogonal to the predetermined direction is non-circular and is fitted to the non-circular outer surface portion.

According to this configuration, the outer peripheral portion of the rod portion and the rod guiding portion are penetrated The inner peripheral portion of the hole portion is configured as a simple structure having a non-circular cross section, and the relative rotation of the rod portion with respect to the cylinder portion can be more surely restricted. Further, since the rod portion or the rod guiding portion is a processing target portion for stopping the rotation, the processing can be easily performed, and the processing portion for stopping the rotation can be further reduced.

In the damper device of the present invention, a curved surface portion whose outer surface is formed on the outer peripheral side of the curved surface and a flat surface portion whose outer surface is formed on the outer peripheral side of the flat surface may be provided on the outer peripheral portion of the rod portion. The inner peripheral portion of the rod guide portion may be provided with a curved surface portion having an inner surface that is formed into a curved surface and fitted to the curved surface portion on the outer peripheral side, and the inner surface is configured as a flat surface and on the outer peripheral side. A flat face on the inner peripheral side that faces the flat face and extends in a predetermined direction.

According to this configuration, since the outer peripheral portion of the rod portion constitutes the curved surface and the flat surface, and the inner peripheral portion of the rod guiding portion constitutes a simple structure of the curved surface and the flat surface, the rod portion can be more reliably restricted from being guided with respect to the rod. The relative rotation of the part.

In the damper device of the present invention, the restricting portion may have a rod portion and a through hole portion of the rod guiding portion. In the plane direction orthogonal to the predetermined direction, the center of the through hole portion may be offset from the center of the piston portion, and the center of the rod portion is deviated from the center of the piston portion.

According to this configuration, by making the center of the rod portion and the center of the through hole portion deviate from the center of the piston portion and making the center portion of the piston portion eccentric, the relative rotation of the rod portion with respect to the cylinder portion can be more reliably restricted.

In the damper device of the present invention, the restricting portion may have a plurality of through-hole portions formed in the rod guiding portion, and a plurality of rod portions respectively inserted into the plurality of through-hole portions and connected to the piston portion .

According to this configuration, a plurality of rod portions and a plurality of through hole portions are provided The simple structure can more reliably limit the relative rotation of the rod portion with respect to the cylinder portion. Further, since the rotation is stopped by the use of a plurality of portions, it is more advantageous to stop the rotation when a strong circumferential force is applied.

In the damper device of the present invention, the restricting portion may be coupled to each of the first target portion that is at least a part of the cylinder portion or the first base portion, and at least one of the rod portion or the second base portion. The second object part. The restriction portion may include a restriction mechanism that restricts relative rotation of the second target portion with respect to the first target portion.

According to this configuration, the relative rotation of the rod portion with respect to the cylinder portion can be more reliably restricted by the mechanism disposed on the outer side of the cylinder portion and the rod portion.

The damper device disposed between the article and the ceiling may be disposed, and the first base portion disposed on one of the article and the ceiling may be placed in contact with each other, and may be placed on the article and the ceiling. The second base portion of the second form forms an anti-tip device.

The anti-tip device is attached to the article and the ceiling in a state in which the orientation of the first base portion connected to the cylinder portion and the orientation of the second base portion connected to the rod portion are maintained in a fixed relationship. The composition between the two. Therefore, it is possible to reduce the work load caused by the orientation adjustment. In particular, since the fine orientation adjustment operation can be reduced or omitted at a high position near the ceiling, it is advantageous on the work surface.

1‧‧‧Anti-dumping device

10, 210, 310, 410, 510, 610, 710, 810, 910, 1010‧‧‧ damper

11, 211, 311, 811, 911 ‧ ‧ cylinder department

12‧‧‧Cylinder

12D‧‧‧ convex

13, 613, 713, 813A, 813B‧‧‧ pole

13A‧‧‧Axis

15‧‧‧Intersection

15A‧‧‧through hole

16, 216, 316, 416, 516, 616, 716, 816‧‧ ‧ piston department

16D‧‧‧Ditch on the side of the piston

17, 617, 717, 817 ‧ ‧ rod guide

17A, 617A, 717A, 817A, 817B‧‧‧through hole

30A‧‧‧1st base section

30B‧‧‧2nd base section

31‧‧‧Base body

35‧‧‧ Bushing

35A‧‧‧ recess

35B‧‧‧ outer perimeter

35C‧‧‧ inner circumference

37‧‧‧Slip-stop

41‧‧‧Ditch

41A‧‧‧Bottom of the ditch

41B‧‧‧ inner wall

42‧‧‧Depression

43‧‧‧ convex

43A‧‧‧ inner wall

43B‧‧‧ inserted through hole

45‧‧‧Bolts (rotating shaft members)

45A‧‧‧Bolt head

45B‧‧‧Axis

47‧‧‧ Nuts (rotating shaft members)

49‧‧‧Blocked hole

50‧‧‧Drop Prevention Department

51‧‧‧Connecting Department

51A‧‧‧Card

53‧‧‧Pendant

70‧‧‧Angle Limitation

71‧‧‧Restrictions

71A‧‧‧Support

71B‧‧‧Insert Department

71C‧‧‧Sloping surface

71D‧‧‧ Protrusion

73‧‧‧Support

73A‧‧‧1st support

73B‧‧‧2nd support

80, 280, 380, 480, 580, 680, 780, 880 ‧ ‧ restrictions

284‧‧‧ protruding members

286‧‧‧ potential additional components

288‧‧‧ Housing Department (holes)

312D‧‧‧flat part (2nd inner surface part)

316D‧‧‧flat part (2nd outer surface part)

412A‧‧‧ inner circumference (elliptical inner surface)

416A‧‧‧Outer part (elliptical outer surface)

512D‧‧‧ditch on the cylinder side

516D‧‧‧ convex part on the piston side

614A‧‧‧Cylindrical face (curved face on the outer peripheral side)

614B‧‧‧flat (flat face on the outer circumference)

618A‧‧‧Cylindrical face (curved face on the inner circumference side)

618B‧‧‧flat (flat face on the inner circumference side)

902‧‧‧damper body

930A‧‧‧1st base part (the first target part)

930B, 1030‧‧‧2nd base part (second object part)

980, 1080‧‧‧Restriction Department (Restriction Agency)

1011‧‧‧Cylinder Department (Part 1)

C‧‧‧Ceiling

F‧‧‧Furniture (items)

R1, R2‧‧‧ ribs

W‧‧‧ wall

Fig. 1 is a side view showing a state in which the anti-tip device of the first embodiment is attached between the upper surface of the furniture and the ceiling.

Fig. 2 is a front elevational view showing a state in which the anti-tip device of the first embodiment is attached between the upper surface of the furniture and the ceiling.

Fig. 3 is a partial cross-sectional view showing the damper device and the first base portion used in the anti-tip device of the first embodiment.

Fig. 4 is a perspective view showing a damper device, a first base portion, and a drop preventing portion used in the anti-tip device of the first embodiment.

Fig. 5 is a partial cross-sectional view showing the damper device, the first base portion, and the drop preventing portion used in the anti-tip device of the first embodiment.

Fig. 6 is a partial cross-sectional view showing the damper device, the first base portion, and the angle restricting portion used in the anti-tip device of the first embodiment.

Fig. 7 is a side view schematically showing a damper device used in the anti-tip device of the first embodiment.

Fig. 8 is a schematic cross-sectional view schematically showing a cross section taken along line A-A of Fig. 7;

Fig. 9(A) is a schematic cross-sectional view showing a cross section taken along the line B-B of Fig. 8, and Fig. 9(B) is a schematic cross-sectional view schematically showing a cross section taken along line C-C of Fig. 8.

Fig. 10 is a schematic cross-sectional view showing a damper device used in the anti-tip device of the second embodiment.

Fig. 11 is a schematic cross-sectional view showing a damper device used in the anti-tip device of the third embodiment.

Fig. 12 (A) is a schematic cross-sectional view of the vicinity of a rod guide portion of a damper device used in the anti-tip device of the fourth embodiment, and Fig. 12 (B) is a schematic cross-sectional view of the vicinity of the rod side pressure chamber.

Fig. 13 (A) is a schematic cross-sectional view of the vicinity of a rod guide portion of a damper device used in the anti-tip device of the fifth embodiment, and Fig. 13 (B) is a schematic cross-sectional view of the vicinity of the rod side pressure chamber.

Fig. 14 is a schematic cross-sectional view showing a longitudinal section of a portion of a damper device used in the anti-tip device of the sixth embodiment.

Fig. 15(A) is a schematic cross-sectional view schematically showing a cross section taken along line D-D of Fig. 14 15(B) is a schematic cross-sectional view schematically showing a cross section taken along line E-E of Fig. 14 .

Fig. 16 is a schematic cross-sectional view showing a longitudinal section of a portion of a damper device used in the anti-tip device of the seventh embodiment.

17(A) is a schematic cross-sectional view showing a F-F cross section of FIG. 16, and FIG. 17(B) is a schematic cross-sectional view schematically showing a G-G cross section of FIG. 16.

Fig. 18 is a schematic cross-sectional view showing a longitudinal section of a portion of a damper device used in the anti-tip device of the eighth embodiment.

19(A) is a schematic cross-sectional view showing a cross section taken along line H-H of FIG. 18, and FIG. 19(B) is a schematic cross-sectional view schematically showing a cross section taken along line I-I of FIG. 18.

Fig. 20 is a side view showing a state in which the anti-tip device of the ninth embodiment is attached between the upper surface of the furniture and the ceiling.

Fig. 21 is a side view showing a state in which the anti-tip device of the tenth embodiment is attached between the upper surface of the furniture and the ceiling.

<Embodiment 1>

The first embodiment of the damper device and the anti-tip device according to the present invention will be described with reference to the drawings.

The anti-tip device 1 shown in Fig. 1 is provided with at least one or more between the upper surface of the furniture F and the ceiling C. The furniture F is provided on the floor surface with the back surface facing the wall surface W extending from the floor surface (not shown) as the installation surface in the vertical direction. The furniture F has a rectangular parallelepiped shape, and has a structure such as a door or a drawer (not shown) on the front side (the right side surface of FIG. 1), and can store clothes, jewelry, and the like inside. The horizontal cross-sectional shape of the furniture F is a rectangular shape in which the left-right direction (depth direction of FIG. 1) is long. Family When the anti-tilting device of Fig. 1 is not attached to the cover F, there is a possibility that it may be tilted toward the front (to the right of Fig. 1) due to the swing of an earthquake or the like.

As shown in FIGS. 1 and 2, the anti-tip device 1 includes a damper device 10, a pair of base portions 30A and 30B, a drop preventing portion 50, and an angle restricting portion 70.

The damper device 10 is configured, for example, as a compression damper that generates a damping force generated during an expansion operation that is smaller than a damping force generated during a contraction operation. The damper device 10 includes a cylinder portion 11 that is formed in a tubular shape and extends in a predetermined direction, and a rod portion 13 that is disposed to straddle the inside and the outside of the cylinder portion 11, and the rod portion 13 is slidable relative to the cylinder portion 11 the composition of relative movement. A joint portion 15 is provided at an end portion of the cylinder portion 11, and a joint portion 15 is also provided at an end portion of the rod portion 13. As shown in FIGS. 1 to 3, each joint portion 15 is formed by bending a flat metal member. Each of the joint portions 15 is formed with a through hole 15A that penetrates in a direction orthogonal to the axis of the damper device 10. Further, details of the damper device 10 will be described later.

As shown in FIGS. 1 and 2, the first base portion 30A is coupled to the joint portion 15 provided on one end side (lower end side) of the cylinder portion 11. The second base portion 30B is coupled to the joint portion 15 provided on the front end side (upper end side) of the rod portion 13. The first base portion 30A is placed on the base side of the article on the upper surface of the furniture F, and the second base portion 30B is placed in contact with the base portion of the ceiling C on the ceiling side. The first base portion 30A and the second base portion 30B have the same configuration and structure. As shown in FIGS. 1 to 4, each of the base portions has a base portion body 31 and a bolt as a rotating shaft member. 45 and a nut 47, a bush 35, a slip-stop portion 37, and the like.

In the following description, the first base portion 30A will be described in detail, and the second base portion 30B will be described in the same manner and structure as the first base portion 30A.

When the first base portion 30A is viewed from above in a state where the upper surface of the furniture F is placed in contact with the upper surface of the furniture F, the base portion main body 31 has a rectangular shape. Hereinafter, the direction in which the long side of the outer shape of the base portion body 31 in the plan view is extended is referred to as "longitudinal direction", and the direction in which the short side extends is referred to as "short side direction". Moreover, when the first base portion 30A is viewed in the short-side direction while being placed on the upper surface of the furniture F, the lower end edge of the base portion body 31 is parallel to the upper surface of the furniture F. The arcuate shape is extended linearly and the upper end edge is raised upward from both sides of the lower end edge (see Fig. 1). When the first base portion 30A is viewed in the longitudinal direction while being placed on the upper surface of the furniture F, the base portion main body 31 has a substantially trapezoidal shape in which the upper end edge is shorter than the lower end edge. Shape (refer to Figure 2 and Figure 3).

In the example shown in FIG. 2, FIG. 3, and the like, the upper surface of the furniture F and the lower surface of the ceiling C are horizontal planes orthogonal to the vertical direction, and the respective contacts of the first base portion 30A and the second base portion 30B are provided. The surface (the surface of the anti-slip portion 37 that is in contact with the furniture F or the ceiling C) is disposed in the horizontal direction. In the first base portion 30A that is placed in contact with the upper surface of the furniture F, the base portion main body 31 is formed on the upper surface in the longitudinal direction (the left and right direction of FIG. 1 and FIGS. 2 and 3). The groove portion 41 extending in the depth direction. The bottom surface 41A of the groove portion 41 is disposed in the horizontal direction, and the inner wall surface 41B rises in a substantially vertical direction on both sides of the bottom surface 41A. The bottom surface 41A of the groove portion 41 is located substantially at the center in the upper and lower directions of the base portion body 31. The bottom surface 41A of the groove portion 41 is formed to be fixed except for a portion of the pair of convex portions 43 and 43 which will be described later.

As shown in FIG. 4, the groove portion 41 is formed with a pair of convex portions 43, 43 protruding from the bottom surface 41A of the groove portion 41 and the two inner wall surfaces 41B and 41B at the center portion in the longitudinal direction. As shown in FIGS. 2 and 3, a space in which the joint portion 15 of the damper device 10 and the bushing 35 to be described later are fitted is formed between the convex portions 43 and 43. This space is connected to the groove portion 41. As shown in FIG. 3, the inner wall surfaces 43A and 43A of the pair of convex portions 43 and 43 are spaced apart from each other (the length in the short side direction of the space), which is slightly larger than the length of the bushing 35 to be described later. The pair of convex portions 43 and 43 are formed with insertion holes 43B through which the shaft portion 45B of the bolt 45 to be described later is inserted so as to penetrate in the short side direction.

As shown in FIG. 4, the groove portion 41 is formed with a pair of locked holes 49 in the bottom surface 41A. In the direction of the groove portion 41, the distance from the convex portion 43 to each of the locked holes 49 is substantially equal. Each of the locked holes 49 has a slit shape that extends toward the entire width of the groove portion 41. Specifically, each of the locked holes 49 has the same length as the width of the groove portion 41, and has a width slightly larger than the thickness of the locking portion 51A of the drop preventing portion 50 to be described later, and the insertion portion provided in the angle restricting portion 70. The thickness of 71B. The latched hole 49 is a latched portion into which the locking portion 51A of the drop preventing portion 50, which will be described later, is inserted. The other locking hole 49 is a locked portion that is inserted and locked by the insertion portion 71B provided in the angle restricting portion 70 to be described later.

In the first base portion 30A that is placed on the upper surface of the furniture F, the base portion main body 31 is formed with a pair of recessed portions 42 at the center portion in the longitudinal direction and on both sides of the groove portion 41. Each of the recessed portions 42 is opened upward in the direction other than the short side direction. An opening portion that is an end portion of the insertion hole 43B that penetrates the convex portion 43 is provided on a side surface inside the recessed portion 42. A head portion 45A of a bolt 45 to be described later and a nut 47 screwed into the bolt 45 are disposed inside each of the recessed portions 42. Each of the recessed portions 42 is formed such that the tool can be fitted upward to the head portion 45A or the nut 47 of the bolt 45 disposed therein from above, and is formed to be widened upward in the longitudinal direction.

As shown in FIGS. 1 to 3, the base portion body 31 has a hollow structure. As shown in FIG. 2 and FIG. 3, the base portion main body 31 is opened downward in the first base portion 30A which is placed on the upper surface of the furniture F. The base portion body 31 is inside A plurality of ribs R1 (FIG. 1) extending in parallel with each other in the short-side direction and two ribs R2 (FIG. 3) extending in parallel in the longitudinal direction are formed in the intersecting portion.

As shown in FIGS. 2 and 3, the rotating shaft member is a bolt 45 inserted from one side of the insertion hole 43B of the base portion body 31, and a nut 47 screwed into the shaft portion 45B of the bolt 45. Composition. The central axis of each of the bolts 45 assembled to the first base portion 30A and the second base portion 30B serves as a rotation axis of the damper device 10. In other words, the damper device 10 relatively rotates with respect to the first base portion 30A around the central axis of the bolt 45 assembled to the first base portion 30A. Similarly, the damper device 10 is relatively rotated with respect to the second base portion 30B centering on the central axis of the bolt 45 assembled to the second base portion 30B.

As shown in Fig. 3, the bushing 35 is substantially cylindrical. The bushing 35 is an elastic body, and the length of the bushing 35 is slightly smaller than the distance between the inner wall faces 43A, 43A of one of the pair of convex portions 43, 43 provided in the base portion body 31. A concave portion 35A that is formed around the outer peripheral surface of the central portion is formed in a central portion of the bushing 35. The outer diameter of the recess 35A is substantially equal to the inner diameter of the through hole 15A formed in the joint portion 15 of the damper device 10. The outer diameter of the portion of the bushing 35 that rises from both ends of the recessed portion 35A is larger than the inner diameter of the through hole 15A formed in the joint portion 15 of the damper device 10. The outer peripheral surface 35B of both ends of the bushing 35 is reduced in diameter toward the outer side. When the bushing 35 is inserted into the through hole 15A formed by the joint portion 15 of the damper device 10 from the outer peripheral surface 35B, the vicinity of the outer peripheral surface 35B is inserted while being elastically deformed. Further, the bushing 35 is fitted into the through hole 15A by the recess 35A, and is attached to the joint portion 15 of the damper device 10.

The inner diameter of the central portion of the bushing 35 is slightly larger than the outer diameter of the shaft portion 45B of the bolt 45. Further, the inner circumferential surface 35C of the both ends of the bushing 35 is expanded in the outward direction. Therefore, the bushing 35 is rotatable about the shaft portion 45B of the bolt 45. Bushing 35 can be expanded in two The inner peripheral surface 35C of the end portion abuts against the outer peripheral surface of the shaft portion 45B of the bolt 45, and is inclined with respect to the shaft portion 45B of the bolt 45. That is, the bushing 35 is attached to the damper device 10 of the joint portion 15, and is rotatable about the shaft portion 45B of the bolt 45, and is swingable in a direction crossing the rotation direction. Specifically, the swing is performed by the margin of the size and the diameter of the inner peripheral surface 35C. Further, by elastically deforming the bushing 35, the damper device 10 can swing more greatly in a direction crossing the direction of rotation. In addition, in FIG. 3 and the like, the damper device 10 is rotatably and rotatably connected to the first base portion 30A, but the second base portion 30B is also rotatably and configured by the same configuration. It is swingably connected to the second base portion 30B.

As shown in FIG. 1 to FIG. 4, the anti-slip portion 37 is made of, for example, rubber, and has a shape similar to that of the base portion main body 31 in a similar shape (rectangular shape), and has a substantially flat shape. The anti-slip portion 37 is flat against the upper surface of the furniture F or the surface of the ceiling C, and the surface facing the opposite side (the surface facing the base portion body 31) is formed with the outer peripheral wall of the base portion body 31. And a fitting groove in which the ribs R1 and R2 match. The anti-slip portion 37 is detachably attached to the base portion body 31 by its elastic force. For example, in the example of FIG. 3, the first sliding portion 37 is fitted to the lower end opening portion of the base portion main body 31 in the first base portion 30A which is placed in contact with the upper surface of the furniture F.

As shown in FIGS. 1 , 4 , and 5 , the drop preventing portion 50 is formed by bending a flat strip-shaped metal or formed of a resin, and has a connecting portion 51 and a hanging portion 53 . The drop preventing portion 50 has a width slightly narrower than the width of the groove portion 41 formed by the base portion body 31, and is fixed. The connecting portion 51 has a locking portion 51A formed by bending one end portion at a right angle. The hanging portion 53 is continuous with the other end portion of the connecting portion 51, is orthogonal to the connecting portion 51, and extends in the same direction as the locking portion 51A, and is set to be anti-dumping. When the upper side of the pouring device 1 is tilted in the direction away from the wall surface W, it does not deviate from the distance between the wall surface W and the back surface of the furniture F. The drop preventing portion 50 is attached to the first base portion 30A that is placed on the upper surface of the furniture F, and the locking portion 51A of the connecting portion 51 is inserted and locked to the base portion body 31. The blocked hole 49 on the wall surface W side. The connecting portion 51 extends along the groove portion 41 formed in the base portion main body 31 while being attached to the base portion main body 31, and the other end portion is located on the outer edge of the article side base portion 30A (item side base) The outer edge of the sliding portion 37 of the portion 30A is further outer. The hanging portion 53 is suspended from the other end portion of the coupling portion 51, and extends downward from the outer edge of the outer edge of the sliding portion 37. The drop preventing portion 50 is disposed below the first base portion 30A and disposed between the wall surface W and the back surface of the furniture F.

As shown in FIGS. 1, 2, and 6, the angle restricting portion 70 is detachably attached to the first base portion 30A. The angle restricting portion 70 has a restricting portion 71 that extends in a substantially vertical direction in a state of being attached to the first base portion 30A, and a supporting portion 73 that is provided continuously below the restricting portion 71 to prevent the restricting portion 71 from falling over. . The restricting portion 71 is a flat plate and has a substantially rectangular shape. When the angle restricting portion 70 is attached to the first base portion 30A that is placed on the upper surface of the furniture F when the angle regulating portion 70 is attached, a short side is located at the upper end support portion 71A. Further, the other end portion is located at the lower end and is inserted into the insertion portion 71B of the base portion 31 which is located on the side away from the wall surface W by the locking hole 49. The restricting portion 71 abuts against the support portion 71A by the cylinder portion 11 of the damper device 10, thereby restricting the damper device 10 from being further tilted more than the tilting posture. The inclination angle of the damper device 10 with respect to the vertical direction is preferably 15 to 25 degrees. The support portion 71A is open to the upper side, and is bent downward so as to be in contact with the outer circumference of the cylinder portion 11 by about 1/3. Since the support portion 71A does not firmly hold the cylinder portion 11, it does not limit the damping generated when the furniture F is tilted or shaken due to the oscillation of an earthquake or the like. Movement of device 10.

As shown in FIG. 6, the insertion portion 71B has inclined surfaces 71C and 71C which are cut at the corners on both sides of the short side in the longitudinal direction so as to become thinner toward the front end, and the surface of one of the front end portions is short. A protrusion 71D protruding in the side direction. The support portion 73 includes a first support portion 73A and a second support portion 73B. The first support portion 73A has a flat plate having the same width as the restricting portion 71 and extending in a direction orthogonal to the restricting portion 71. When the insertion portion 71B of the restriction portion 71 is inserted into the locked hole 49 of the base portion main body 31 of the article-side base portion 30A, the first support portion 73A comes into contact with the groove portion 41 formed in the base portion body 31. The state of the bottom surface 41A. The second support portion 73B is a flat-angled isosceles triangle-shaped flat plate that is connected to a corner portion between the first support portion 73A and the restriction portion 71.

Next, the details of the damper device 10 will be described. The damper device 10 has an appearance as shown in Fig. 7, and has an internal configuration as shown in Fig. 8. Further, each portion of the damper device 10 has a cross-sectional structure as shown in Figs. 9(A) and (B). The damper device 10 is provided with an elongated and cylindrical cylinder portion 11 and an elongated and shaft-shaped piston portion 13, and the entire body is elongated.

As shown in FIG. 7 and FIG. 8 , the cylinder portion 11 has a cylindrical shape having a bottom portion and is formed to extend in a predetermined direction (longitudinal direction of the damper device 10). The cylinder portion 11 has a cylindrical body 12, a rod guide portion 17, and a joint portion 15 on one side. As shown in FIG. 8, the cylindrical body 12 is formed in a cylindrical shape and has a shape elongated in a predetermined direction (longitudinal direction of the damper device 10), and a bottom portion 12A is provided on one side in the longitudinal direction. An opening portion 12B is formed on the other side in the longitudinal direction.

The rod guide portion 17 is configured to close the region other than the region in which the rod portion 13 is disposed in the opening region of the opening portion 12B, and is fixed to the tubular body 12, and is The end portion (upper end portion) of the other side of the longitudinal direction of the cylinder portion 11 is disposed. The rod guide portion 17 has a predetermined thickness, and a through hole portion 17A that extends in the thickness direction (longitudinal direction of the cylinder portion 11) is formed in the center portion. The outer peripheral surface of the rod guide portion 17 is configured as a cylindrical surface. Specifically, the center of the outer peripheral surface (cylindrical surface) and the center of the through hole portion 17A are both the center line L1.

As shown in FIG. 7, the joint portion 15 on one side is integrally coupled to the bottom portion 12A of the tubular body 12. As shown in FIG. 1 , FIG. 2 , and the like, the joint portion 15 connected to the tubular body 12 corresponds to an example of a joint portion, and functions as a portion connected to the first base portion 30A. The structure of the joint joint portion 15 and the first base portion 30A is as described above, and the joint portion 15 is rotatably and swingably coupled to the first base portion 30A. However, the relative rotation operation (rotation operation around the center line L1) of the first base portion 30A with respect to the joint portion 15 is restricted.

The rod portion 13 includes a joint portion 15 having a shaft portion 13A and a one side (upper side), and is disposed by inserting the rod guide portion 17 as shown in Fig. 8, and as shown in Fig. 7, the front end side is formed to protrude toward the outside of the cylinder portion 11. The composition. As shown in FIG. 8, one end portion (base end portion) of the rod portion 13 is coupled to the piston portion 16, and the other end portion (front end portion) is coupled to the second base portion 30B as shown in FIG. The joint portion 15 of the rod portion 13 is rotatably and swingably coupled to the second base portion 30B. However, the relative rotation operation (rotation operation around the center line L1) of the second base portion 30B with respect to the rod portion 13 is restricted. The rod portion 13 and the piston portion 16 are integrally formed, so that the rod portion 13 cannot be relatively displaced with respect to the piston portion 16. As shown in FIG. 8, the shaft portion 13A of the rod portion 13 is inserted into the through hole portion 17A and spans the inside and the outside of the cylinder portion 11, and the end portion of one side (lower side) is fixed to the piston portion 16. As shown in FIGS. 1 and 7, the joint portion 15 is fixed to the end portion of the other side (upper side) of the shaft portion 13A.

As shown in FIG. 8, it is disposed inside the cylinder portion 11 so as to be able to The piston portion 16 that is configured to move in the fixed direction (the longitudinal direction of the cylinder portion 11) and is fitted to the tubular body 12. The cylindrical body 12 of the cylinder portion 11 is internally partitioned into a rod side pressure chamber 21 that houses the base end portion of the rod portion 13 and a rod side opposite pressure chamber 22 by the piston portion 16. An orifice 16A is formed in the piston portion 16 as a throttle valve that communicates between the two pressure chambers. The restriction hole 16A functions as a damping force generation unit that generates a damping force by applying a resistance to the flow of the hydraulic oil between the rod side pressure chamber 21 and the rod opposite pressure chamber 22 in conjunction with the expansion and contraction operation of the damper device 10 Features. Further, the piston portion 16 is formed with a connecting passage 16E that communicates between the pressure chambers via the check valve 16B. The check valve 16B allows the flow of hydraulic oil from the rod side pressure chamber 21 toward the opposite side pressure chamber 22 and prevents its reverse flow.

The damping device 10 generates a mechanism for damping force, and since it is a well-known person, it will be briefly described. The damper device 10 is sealed with hydraulic oil and compressed gas in the cylinder portion 11, and functions as a compression damper that generates a damping force generated during the expansion operation that is smaller than a damping force generated during the contraction operation. The extension operation of the damper device 10 refers to an operation in which the protruding length of the rod portion 13 from the cylinder portion 11 and the length of the damper device 10 become long. The contraction operation of the damper device 10 refers to an operation in which the protruding length of the rod portion 13 from the cylinder portion 11 and the length of the damper device 10 are shortened.

The expansion force of the compressed gas enclosed in the cylinder portion 11 of the damper device 10 acts in the direction of elongation. When the damper device 10 is in the extending operation, the flow path of the hydraulic oil from the rod side pressure chamber 21 toward the opposite side pressure chamber 22 is the path of the restriction hole 16A and the connecting passage 16E. On the other hand, when the damper device 10 is in the contracting operation, the flow path of the hydraulic oil from the opposite-side pressure chamber 22 toward the rod-side pressure chamber 21 is limited to the flow hole 16A. Therefore, the damping force generated by the damper device 10 during the extension operation is smaller than the damping force generated during the contraction operation.

As shown in FIG. 9(B), the damper device 10 has a restricting portion 80 formed by the inner peripheral portion of the cylinder portion 11 and the outer peripheral portion of the piston portion 16. The restricting portion 80 is limited to the relative rotation of the rod portion 13 with respect to the cylinder portion 11 between the piston portion 16 and the cylinder portion 11.

As shown in Fig. 9(B), the inner peripheral portion of the tubular body 12 is configured such that the inner edge of the cross section in the direction orthogonal to the predetermined direction (longitudinal direction of the cylinder portion 11) is non-circular, and the piston A non-circular inner surface portion to which the outer peripheral portion (non-circular outer surface portion) of the portion 16 is fitted. The inner peripheral portion of the tubular body 12 includes a cylindrical surface portion 12C whose inner peripheral surface is configured as one of cylindrical portions centered on the center line L1, and a convex portion 12D whose inner peripheral surface faces the inside of the cylinder portion 11 The side (the side of the center line L1 on the center side of the tubular body 12) has a protruding shape. The convex portion 12D extends in the longitudinal direction (predetermined direction) of the cylinder portion 11 and covers a predetermined range H (FIGS. 7 and 8) of the longitudinal direction of the cylinder portion 11, and is formed in a rib shape with a fixed width. The inner peripheral portion of the cylindrical body 12 covers the entire predetermined range H to have a cross-sectional structure as shown in Fig. 9(B).

The outer peripheral portion of the piston portion 16 is configured such that the outer edge of the cross section in the direction orthogonal to the predetermined direction (longitudinal direction of the cylinder portion 11) is a non-circular outer surface portion that is non-circular. The outer peripheral portion of the piston portion 16 is provided with a cylindrical surface portion 16C whose outer peripheral surface is formed as one portion of a cylindrical surface centered on the center line L1 and a groove portion 16D on the piston portion side whose outer peripheral surface faces the center side of the piston portion 16 ( The center line L1 side of the center side of the cylindrical body 12 is recessed. The groove portion 16D on the piston portion side extends in the thickness direction of the piston portion 16 (longitudinal direction of the cylinder portion 11), and is configured to have a fixed width as a whole in the thickness direction. The piston portion 16 covers the entire thickness direction to have an outer edge structure as shown in Fig. 9(B). The piston portion 16 is configured such that the cylindrical surface portion 16C is fitted to the cylindrical surface portion 12C of the tubular body 12, and the groove portion 16D is fitted to the convex portion 12D of the tubular body 12, and is slidably fitted to the tubular body 12. Furthermore, in FIG. 9(B), the piston portion 16 is schematically shown and omitted. The restrictor hole 16A and the connecting passage 16E shown in Fig. 8 and the like.

When the piston portion 16 moves inside the tubular body 12, the restricting portion 80 configured as described above guides the groove portion 16D on the piston portion side so as to move along the convex portion 12D. Further, in the range in which the piston portion 16 is movable, since the relative position of the circumferential direction of the groove portion 16D (the position in the circumferential direction centered on the center line L1) is always maintained at the position of the convex portion 12D, the piston portion 16 is changed. It is impossible to rotate relative to the tubular body 12 relatively. Therefore, the rod portion 13 integrated with the piston portion 16 cannot be rotated relative to the cylinder portion 11 including the tubular body 12, and the rotation is stopped.

As described above, in the damper device 10 of the present configuration, the piston portion 16 that moves in a predetermined direction is disposed inside the cylinder portion 11. Further, the rod portion 13 is inserted into the insertion hole portion 17A and spans the inside and the outside of the cylinder portion 11, and the one end portion is fixed so as not to be relatively rotatable relative to the piston portion 16. Further, the restricting portion 80 restricts the relative rotation of the rod portion 13 with respect to the cylinder portion 11. In the damper device 10, the rod portion 13 held by the cylinder portion 11 can be restricted from rotating by the restricting portion 80. Therefore, the orientation of the first base portion 30A connected to the cylinder portion 11 and the orientation of the second base portion 30B connected to the rod portion 13 can be maintained in a fixed relationship. Therefore, when the first base portion 30A and the second base portion 30B are attached, the orientation of the second base portion 30B does not greatly change with respect to the orientation of the first base portion 30A, and the adjustment orientation can be reduced. The burden of work at the time.

The restricting portion 80 of the damper device 10 is configured to restrict the relative rotation of the piston portion 16 with respect to the cylinder portion 11 between the piston portion 16 and the cylinder portion 11. According to this configuration, the rotation between the cylinder portion 11 and the piston portion 16 that are fitted in close contact can be more reliably restricted.

Specifically, the restricting portion 80 has an inner peripheral portion of the cylinder portion 11 and an outer peripheral portion of the piston portion 16 , and a convex portion that protrudes toward the inner side of the cylinder portion 11 and extends in a predetermined direction is formed in the inner peripheral portion of the cylinder portion 11 . 12D. Further, a groove portion 16D on the piston portion side that extends in a predetermined direction and is fitted to the convex portion 12D is formed on the outer peripheral portion of the piston portion 16. Further, when the piston portion 16 moves, the groove portion 16D on the piston portion side moves along the convex portion 12D. According to this configuration, the fitting of the convex portion 12D formed in the inner peripheral portion of the cylinder portion 11 and the groove portion 16D on the piston portion side formed on the outer peripheral portion of the piston portion 16 can more reliably restrict the piston portion. The relative rotation of 16 with respect to the cylinder portion 11. Further, the restricting portion 80 can be realized by forming a groove portion on the outer peripheral portion of the piston portion 16 and forming the convex portion 12D on the inner peripheral portion of the cylinder portion 11 to be easily formed.

Further, the damper device 10 includes the first base portion 30A that is placed in the furniture F (item), and the second base portion 30B that is placed in the ceiling C in contact with each other. Anti-tip device 1. The anti-tip device 1 can be installed in a state in which the orientation of the first base portion 30A connected to the cylinder portion 11 and the orientation of the second base portion 30B connected to the rod portion 13 are maintained in a fixed relationship. The composition between the furniture F (item) and the ceiling C. Therefore, the work load caused by the orientation adjustment can be alleviated. In particular, it is possible to reduce or omit the fine orientation adjustment work at a high position near the ceiling, which is advantageous in the work surface.

<Embodiment 2>

Next, a damper device according to the second embodiment and an anti-tip device using the damper device will be described mainly with reference to Fig. 10 .

As shown in FIG. 10, the damper device and the anti-tip device of the second embodiment replace the live The plug portion 16D (Fig. 9(B)) on the plug side is provided with a protruding member 284, a potential energy adding member 286, and a housing portion 288. Further, instead of the convex portion 12D ((Fig. 9(B))), the groove portion 212D on the cylinder portion side is provided. The configuration is different from the damper device 10 and the anti-tip device 1 of the first embodiment shown in Fig. 1 and the like. The configuration other than the above is the same as that of the damper device 10 and the anti-tip device 1 of the first embodiment. Therefore, the configuration shown in Figs. 1 to 9 and the configuration described in the first embodiment are excluding the piston portion side. The portions other than the groove portion 16D and the convex portion 12D are the same as those of the first embodiment, and the detailed description thereof will be omitted. The damper device 210 of Fig. 10 has the same configuration as that of the first embodiment, and is the same as that of the first embodiment. Further, in Fig. 10, a cross section that is cut in a direction orthogonal to the center line L1 at the position of the piston portion 216 is schematically shown, but the restriction hole 16A or the check valve 16B of Fig. 8 Etc. is omitted.

The damper device 210 shown in FIG. 10 includes a cylinder portion 211, a piston portion 216, and a rod portion 13.

The cylinder portion 211 is the same as the cylinder portion 11 (FIG. 7, FIG. 8, etc.) of the first embodiment except for the cylindrical body 212. Specifically, the cylinder portion 211 is not the same as the groove portion 212D on the cylinder portion side. The cylinder portion 11 of the first embodiment has the same configuration. In other words, in the cylindrical body 212, the groove portion 212D on the cylinder portion side (that is, the position corresponding to the position of the convex portion 12D shown in FIG. 7, FIG. 8, etc.) is the same as that in FIGS. 7 and 8 The portions other than the convex portion 12D of the cylindrical body 12 shown in the figure have the same configuration. The cylinder portion 211 has a long cylindrical shape and is formed in a tubular shape and extends in a predetermined direction (longitudinal direction of the damper device 210).

A joint portion that is connected to the first base portion (a base portion having the same structure as the first base portion 30A shown in FIGS. 1 and 2) is provided on one side in the longitudinal direction of the cylinder portion 211 ( A joint portion having the same structure as the joint portion 15 shown in Figs. 1 and 2 and the like. The The joint portion is fixed to the tubular body 212 in the same structure as the structure of the first embodiment (the structure fixed to the tubular body 12). The damper device 210 is connected to the joint portion of the tubular body 212 and the first base portion having the same structure as the first base portion 30A shown in FIGS. 1 and 2, and is similar to FIG. 1 and FIG. The anti-tip device 1 shown is connected to the same connection structure.

The other side of the cylinder portion 211 in the longitudinal direction (upper end side) is configured in the same manner as in Fig. 9(A). A rod guiding portion similar to the rod guiding portion 17 of Fig. 9(A) is fixed to the upper end side of the cylinder portion 211 in a state of being fitted to the opening end portion of the cylindrical body 212. A through hole portion similar to the through hole portion 17A shown in Fig. 9(A) is formed in the rod guide portion, and the shaft portion 13A of the rod portion 13 shown in Fig. 10 or the like is inserted.

The piston portion 216 is a portion other than the protruding member 284, the potential energy adding member 286, and the accommodating portion 288 (that is, the position near the groove portion on the piston portion side shown in FIG. 7, FIG. 8, etc.), and FIG. 7, FIG. 8, etc. The illustrated piston portion 16 is identical in construction. The piston portion 216 is disposed inside the cylinder portion 211 and is configured to be slidable along the longitudinal direction (predetermined direction) of the cylinder portion 211.

The rod portion 13 has the same configuration as the rod portion 13 of the damper device 10 of the first embodiment shown in Fig. 1 and the like, and has the same function. In the rod portion 13, the second base portion having the same structure as the second base portion 30B of the anti-tip device 1 shown in Fig. 1 and the like is connected to the same structure as the anti-tip device 1 of the first embodiment. The rod portion 13 is inserted into the through hole portion similar to the through hole portion 17A shown in FIG. 9(A) and extends across the inside and the outside of the cylinder portion 211, and the one end portion is not fixed relative to the piston portion 216. The other end portion is connected to a second base portion (not shown).

The restricting portion 280 restricts the rod portion 13 from rotating relative to the cylinder portion 211 . The restricting portion 280 has an inner peripheral portion of the cylinder portion 211 and an outer peripheral portion of the piston portion 216. The protruding member 284, the potential energy adding member 286, and the accommodating portion 288. A cylindrical surface portion 12C similar to that of the first embodiment and a groove portion 212D on the cylinder portion side extending in the longitudinal direction (predetermined direction) of the cylinder portion 211 are formed in the inner peripheral portion of the cylinder portion 211. The groove portion 212D on the cylinder portion side is configured to be recessed toward the side opposite to the center side (the center line L1 side) of the cylinder portion 211, and covers a predetermined range of the longitudinal direction of the cylinder portion 211 (FIG. 7 and FIG. 8). The range of the predetermined range H shown is linearly extended with a fixed width. The inner peripheral portion of the cylindrical body 212 covers the entire range of the predetermined range H, and has a cross-sectional structure as shown in FIG.

As shown in FIG. 10, a cylindrical surface portion 16C and a housing portion 288 which are the same as the cylindrical surface portion 16C (FIG. 9(B)) shown in the first embodiment are formed on the outer peripheral portion of the piston portion 216. The accommodating portion 288 is formed as a hole portion that is recessed toward the center side from the outer peripheral surface side. The size of the recess of the receiving portion 288 in the thickness direction of the piston portion 216 is smaller than, for example, the thickness of the piston portion 216. The accommodating portion 288 functions as a moving path of the protruding member 284 , and accommodates a portion of the protruding member 284 in the accommodating portion 288 and a potential energy adding member 286 that adds potential energy to the protruding member 284 toward the outside. In the fitted state of FIG. 10, the protruding member 284 protrudes from the outer peripheral surface of the piston portion 216 and is fitted into the groove portion 212D on the cylinder portion side. The potential energy adding member 286 is configured by, for example, an elastic member such as a spring member, and continuously applies a force to the protruding member 284 toward the outer side in the direction orthogonal to the center line L1 (radial direction). In other words, the potential energy adding member 286 is configured to continuously press the protruding member 284 toward the side protruding from the outer peripheral surface of the piston portion 216.

When the restricting portion 280 is configured in this manner, when the piston portion 216 moves in the tubular body 212, the protruding member 284 is fitted along the groove portion 212D on the cylinder portion side while moving along the groove portion 212D on the cylinder portion side. Further, in the range in which the piston portion 216 is movable, the projection member 284 is opposed to the circumferential direction of the cylindrical body 212. The position (the position in the circumferential direction centering on the center line L1) is always held at the position of the groove portion 212D. Therefore, the piston portion 216 becomes unable to relatively rotate with respect to the tubular body 212. Therefore, the rod portion 13 integrated with the piston portion 216 cannot be rotated relative to the cylinder portion 211 including the tubular body 212, and is prevented from rotating.

According to the damper device 210 of the present configuration, the relative rotation of the piston portion 216 with respect to the cylinder portion 211 can be more surely restricted by the fitting of the groove portion 212D on the cylinder portion side and the protruding member 284 disposed on the outer peripheral portion of the piston portion 216. . Moreover, it is easy to ensure the cross-sectional area of the piston portion 216, and it is advantageous to provide a valve or the like.

Further, the anti-tip device 1 is disposed so as to be in contact with the first base portion (see the first base portion 30A of FIG. 1) in which the damper device 210 is placed in contact with the damper device 210, and is in contact with the damper device 210. It is formed in the form of the second base portion of the ceiling (see the second base portion 30B of Fig. 1). The anti-tip device 1 may be installed in a state in which the orientation of the first base portion connected to the cylinder portion 211 and the orientation of the second base portion connected to the rod portion 13 are maintained in a fixed relationship. Between furniture (items) and the ceiling.

<Embodiment 3>

Next, a damper device according to the third embodiment and an anti-tip device using the damper device will be described mainly with reference to Fig. 11 . As shown in Fig. 11, the damper device and the anti-tip device of the third embodiment are provided with a flat portion 316D instead of the groove portion 16D on the piston portion side (Fig. 9(B)). Further, the flat portion 312D is provided instead of the convex portion 12D ((Fig. 9(B)). The configuration is different from the damper device 10 and the anti-tip device 1 of the first embodiment shown in Fig. 1 and the like, and the like. The configuration is the same as that of the damper device 10 and the anti-tip device 1 of the first embodiment. Therefore, the configuration shown in Figs. 1 to 9 and the configuration described in the first embodiment are other than the flat portions 312D and 316D. And implementation 1 is the same and the detailed description is omitted. Further, the damper device 310 of Fig. 11 has the same configuration as that of the first embodiment, and is displayed by the same reference numerals as those of the first embodiment.

The damper device 310 shown in FIG. 11 includes a cylinder portion 311, a piston portion 316, and a rod portion 13.

The cylinder portion 311 is the same as the cylinder portion 11 (FIG. 7, FIG. 8, etc.) of the first embodiment except for the cylindrical body 312. Specifically, the portion other than the flat portion 312D is the same as that of the first embodiment. The cylinder portion 11 has the same configuration. That is, in the cylindrical body 312, the portion other than the flat portion 312D (that is, the position corresponding to the convex portion 12D shown in FIG. 7, FIG. 8, etc.) is the same as that shown in FIG. 7, FIG. 8, and the like. The portions other than the convex portion 12D of the body 12 have the same configuration. The cylinder portion 311 has a long cylindrical shape and is formed in a tubular shape and extends in a predetermined direction (longitudinal direction of the damper device 310).

A joint portion that is connected to the first base portion (a base portion having the same structure as the first base portion 30A shown in FIGS. 1 and 2) is provided on one side in the longitudinal direction of the cylinder portion 311 ( A joint portion having the same structure as the joint portion 15 shown in Figs. 1 and 2 and the like. The joint portion is fixed to the tubular body 312 in the same structure as the structure of the first embodiment (the structure fixed to the tubular body 12). The damper device 310 is connected to the same joint structure as the anti-tip device 1 shown in Figs. 1 and 2, and is connected to the joint portion and is identical to the first base portion 30A shown in Figs. 1 and 2 and the like. The base portion of the structure.

A portion of the other side (upper end side) of the longitudinal direction of the cylinder portion 311 is configured in the same manner as in Fig. 9(A). A rod guiding portion similar to the rod guiding portion 17 of Fig. 9(A) is fixed to the upper end side of the cylinder portion 311 in a state of being fitted to the opening end portion of the cylindrical body 312. A through hole portion similar to the through hole portion 17A shown in FIG. 9(A) is formed in the rod guide portion.

The piston portion 316 has the same configuration as the piston portion shown in Figs. 7 and 8 except for the flat portion 316D. The piston portion 316 is disposed inside the cylinder portion 311 and is configured to be slidable along the longitudinal direction (predetermined direction) of the cylinder portion 311.

The rod portion 13 has the same configuration as the rod portion 13 used in the damper device 10 of the first embodiment shown in Fig. 1 and the like, and has the same function. In the rod portion 13, the second base portion 30B similar to the anti-tip device 1 of the first embodiment is connected to the same structure as the anti-tip device 1 of the first embodiment. The rod portion 13 is inserted into the through hole portion similar to the through hole portion 17A shown in FIG. 9(A), and extends across the inside and the outside of the cylinder portion 311, and one end portion is coupled to the piston portion 316 while the other end is connected. The portion is connected to a second base portion (not shown). The restricting portion 380 restricts the rod portion 13 from rotating relative to the cylinder portion 311. The restricting portion 380 has an inner peripheral portion of the cylinder portion 311 and an outer peripheral portion of the piston portion 316. The outer peripheral portion 316A of the piston portion 316 includes a cylindrical surface portion 16C and a flat portion 316D which are the same as the cylindrical surface portion 16C (Fig. 9(B)) of the first embodiment. The outer peripheral portion 316A is configured such that the outer edge of the cross section in the direction orthogonal to the predetermined direction (longitudinal direction of the damper device 310) is a non-circular outer surface portion. The cylindrical surface portion 16C corresponds to an example in which the outer surface is configured as a first outer surface portion of the curved surface. The flat portion 316D corresponds to an example in which the outer surface is configured as a second outer surface portion of the flat surface. The inner peripheral portion 312A of the cylindrical body 312 of the cylinder portion 311 includes a cylindrical surface portion 12C and a flat portion 312D which are the same as the cylindrical surface portion 12C (Fig. 9(B)) of the first embodiment. The inner peripheral portion 312A is configured such that an inner edge of a cross section in a direction orthogonal to a predetermined direction (longitudinal direction of the damper device 310) is non-circular and is fitted to the outer peripheral portion 316A (non-circular outer surface portion). Non-circular inner surface portion. The cylindrical surface portion 12C corresponds to an example of the first inner surface portion, and has a configuration in which the inner surface is configured as a curved surface and is fitted to the cylindrical surface portion 16C (first outer surface portion). Flat portion 312D is equivalent In one example of the second inner surface portion, the inner surface is configured as a flat surface and is opposed to the flat portion 316D (second outer surface portion).

In the restricting portion 380 configured as described above, when the piston portion 316 moves, the cylindrical surface portion 16C (first outer surface portion) moves along the cylindrical surface portion 12C (first inner surface portion), and the flat portion 316D (second outer surface portion) It moves along the flat portion 312D (second inner surface portion). Further, in a range in which the piston portion 316 is movable, the relative position of the flat portion 316D with respect to the cylindrical body 312 (the position in the circumferential direction centered on the center line L1) is always maintained at a position opposed to the flat portion 312D. Therefore, the piston portion 316 becomes unable to relatively rotate with respect to the tubular body 312. Therefore, the rod portion 13 integrated with the piston portion 316 cannot be rotated relative to the cylinder portion 311 including the cylindrical body 312, and the rotation is stopped.

According to this configuration, the outer peripheral portion of the piston portion 316 constitutes a curved surface and a flat surface, and the inner peripheral portion of the cylinder portion 311 has a simple structure of a curved surface and a flat surface, so that the piston portion 316 can be more reliably restricted with respect to the cylinder. The relative rotation of the portion 311.

Further, the anti-tip device 1 is disposed so as to be in contact with the first base portion (see the first base portion 30A of FIG. 1) which is disposed in the furniture (article) including the damper device 310 described above, and is in contact with each other. It is formed in the form of the second base portion of the ceiling (see the second base portion 30B of Fig. 1). The anti-tip device may be attached to the first base portion that is coupled to the cylinder portion 311 in a fixed relationship and the second base portion that is coupled to the rod portion 13 in a fixed state. Between furniture (items) and the ceiling.

<Embodiment 4>

Next, a damper device according to a fourth embodiment and an anti-tip device using the damper device will be described mainly with reference to Fig. 12 .

As shown in Fig. 12(B), the damper device 410 of the fourth embodiment and the anti-tip device using the damper device are provided with a piston having an elliptical cross section instead of the piston portion 16 having a circular cross section (Fig. 9(B) and the like). Part 416. Further, a cylinder portion 411 having an elliptical cross section is provided instead of the cylinder portion 11 having a circular cross section (Fig. 9(B) and the like). Further, as shown in FIG. 12(A), a rod guide portion 417 having an elliptical cross section is provided instead of the circular rod guide portion 17 (FIG. 9(A) and the like). The configuration is the same as that of the damper device 10 and the anti-tip device 1 of the first embodiment shown in Fig. 1 and the like, and the configuration is the same as that of the damper device 10 and the anti-tip device 1 of the first embodiment. Therefore, the configuration shown in FIG. 1 to FIG. 9 and the configuration described in the first embodiment are omitted as in the first embodiment except that the piston portion, the cylinder portion, and the rod guide portion are formed in a cross-sectional elliptical portion. Detailed explanation. Further, the damper device 410 of Fig. 12 is the same as that of the first embodiment, and is denoted by the same reference numerals as those of the first embodiment.

The damper device 410 shown in FIG. 12 includes a cylinder portion 411, a piston portion 416, and a rod portion 13.

The cylinder portion 411 includes a tubular body 412, a rod guide portion 417, and a joint portion (not shown). The joint portion corresponds to an example of the joint portion, and has the same structure as the joint portion 15 (the joint portion 15 fixed to the tubular body 12) shown in Figs. 1 and 2 . The joint portion is provided on one side in the longitudinal direction of the cylinder portion 411, and is fixed to the tubular body 412 by the same structure as the structure of the first embodiment (the structure fixed to the tubular body 12). The joint portion is connected to the same structure as the anti-tip device shown in FIG. 1 and FIG. 2 (the joint structure between the joint portion 15 and the first base portion 30A), and is connected to FIG. 1 and FIG. The base portion of the first base portion 30A having the same structure.

The cross section of the cylindrical body 412 of the cylinder portion 411 which is orthogonal to the longitudinal direction of the cylinder portion 411 (the direction of the center line L1) is as shown in Figs. 12(A) and (B). The cross-sectional structure is such a cross-sectional structure that substantially the entire range (excluding the bottom) of the longitudinal direction of the cylindrical body 412. The cross section of the cylindrical body 412 in the direction orthogonal to the longitudinal direction, the shape of the inner peripheral surface and the shape of the outer peripheral surface are all elliptical.

One end portion (upper end portion) of the cylindrical body 412 of the cylinder portion 411 in the longitudinal direction is configured as an opening portion, and has a bottomed cylindrical shape in which the bottom portion is provided at the other end portion (lower end portion) in the longitudinal direction. The cross section in the vicinity of the upper end portion of the cylindrical body 412 (the cross section in the direction orthogonal to the direction of the center line L1) is configured as shown in Fig. 12(A). As shown in Fig. 12(A), the rod guide portion 417 is fixed to the opening end portion of the upper end portion of the tubular body 412 in a fitted state. The rod guide portion 417 is formed with a through hole portion 17A which is the same as the through hole portion 17A (Fig. 9(A)) of the first embodiment.

The cross section of the piston portion 416 in the plane direction orthogonal to the longitudinal direction of the cylinder portion 411 (the direction of the center line L1) has a cross-sectional structure as shown in Fig. 12(B). The outer peripheral portion 416A of the piston portion 416 has the same cross-sectional structure over substantially the entire thickness direction of the piston portion 416. The structure other than the outer peripheral portion of the piston portion 416 is the same as that of the first embodiment. In Fig. 12(B), the piston portion 416 is schematically shown, and the restriction hole 16A, the connecting passage 16E, and the like of Fig. 8 are omitted.

The rod portion 13 has the same configuration as the rod portion 13 of the first embodiment shown in Fig. 1 and the like, and has the same function. In the rod portion 13, the second base portion 30B similar to the anti-tip device 1 of the first embodiment is connected to the same structure as the anti-tip device 1 of the first embodiment. The rod portion 13 is inserted into the through hole portion 17A shown in Fig. 12(A), and extends across the inside and the outside of the cylinder portion 411, and the one end portion is fixed to the piston portion 416 so as not to be rotatable relative thereto, and the other end portion is coupled. The second base portion is not shown.

The restricting portion 480 restricts the rod portion 13 from rotating relative to the cylinder portion 411. The restricting portion 480 has an inner peripheral portion 412A of the tubular body 412 and a piston portion 416 The outer peripheral portion 416A. The inner peripheral portion 412A of the cylindrical body 412 is configured such that the inner edge of the cross section orthogonal to the longitudinal direction (predetermined direction) of the cylinder portion 411 is non-circular and the outer peripheral portion 416A (non-circular outer surface) Part) A non-circular inner surface portion that is fitted. The outer peripheral portion of the inner peripheral portion 412A in the direction orthogonal to the longitudinal direction (predetermined direction) of the cylinder portion 411 is an elliptical inner surface portion having an elliptical shape. The outer peripheral portion 416A of the piston portion 416 is configured to be a non-circular outer surface portion having a non-circular outer edge in a direction orthogonal to the longitudinal direction (predetermined direction) of the cylinder portion 411. The outer peripheral portion 416A is fitted to the inner peripheral portion 412A (elliptical inner surface portion) of the tubular body 412, and the outer edge of the cross section orthogonal to the longitudinal direction (predetermined direction) of the cylinder portion 411 is elliptical. An elliptical outer surface portion.

In the restricting portion 480 configured as described above, when the piston portion 416 moves, the outer peripheral portion 416A (elliptical outer surface portion) of the piston portion 416 moves along the inner peripheral portion 412A (elliptical inner surface portion) of the tubular body 412. . Further, since the orientation of the elliptical long axis direction of the inner peripheral portion 412A and the direction of the ellipse major axis direction of the outer peripheral portion 416A are maintained in the same direction within the range in which the piston portion 416 is movable, the piston portion 416 becomes incapable of being opposed to The cylindrical body 412 is relatively rotated. Therefore, the rod portion 13 integrated with the piston portion 416 is prevented from rotating relative to the cylinder portion 411 including the cylindrical body 412, and the rotation is stopped.

According to this configuration, the outer peripheral portion 416A of the piston portion 416 and the inner peripheral portion 412A of the cylinder portion 411 are each configured to have a simple elliptical shape, and the relative rotation of the piston portion 416 with respect to the cylinder portion 411 can be more reliably restricted.

Further, the anti-tip device is disposed on the first base portion (see the first base portion 30A of FIG. 1) which is disposed in the furniture (article) by the damper device 410, and is placed in contact with the damper device 410. The second base of the ceiling (see the second base of Figure 1) The seat 30B) is formed in the form of a seat. The anti-tip device may be attached to the furniture in a state in which the orientation of the first base portion connected to the cylinder portion 411 and the orientation of the second base portion connected to the rod portion 13 are maintained in a fixed relationship. Between (item) and the ceiling.

<Embodiment 5>

Next, a damper device according to the fifth embodiment and an anti-tip device using the damper device will be described mainly with reference to Fig. 13 .

As shown in Fig. 13, the damper device and the anti-tip device of the fifth embodiment are provided with a convex portion 516D on the piston portion side instead of the groove portion 16D on the piston portion side (Fig. 9(B)). Further, a groove portion 512D on the cylinder portion side is provided instead of the convex portion 12D (Fig. 9(B)). The configuration is the same as that of the damper device 10 and the anti-tip device 1 of the first embodiment shown in Fig. 1 and the like, and the configuration is the same as that of the damper device 10 and the anti-tip device 1 of the first embodiment. Therefore, the configuration of the configuration shown in FIG. 1 to FIG. 9 and the configuration of the first embodiment are the same as those of the first embodiment except for the groove portion 512D on the cylinder portion side and the convex portion 516D on the piston portion side. Description. Further, the damper device 510 of Fig. 13 has the same configuration as that of the first embodiment, and is denoted by the same reference numerals as those of the first embodiment.

In the damper device 510, one end portion (upper end portion) of the cylindrical body 512 of the cylinder portion 511 in the longitudinal direction is configured as an opening portion, and the other end portion (lower end portion) in the longitudinal direction is provided with a bottom portion. Bottom cylindrical shape. The cross section in the vicinity of the upper end portion of the cylindrical body 512 (the cross section in the direction orthogonal to the direction of the center line L1) is configured as shown in Fig. 13(A). As shown in Fig. 13(A), the rod guide portion 517 is fixed to the opening end portion of the upper end portion of the cylindrical body 512 in a fitted state. The rod guiding portion 517 is formed with a through hole portion 17A which is the same as the through hole portion 17A (Fig. 9(A)) of the first embodiment. In that The through hole portion 17A is inserted into a shaft portion 13A that is fixed to the rod portion 13 of the piston portion 516.

In the damper device 510, the restricting portion 580 restricts the rod portion 13 from rotating relative to the cylinder portion 511. The restricting portion 580 has an inner peripheral portion of the cylinder portion 511 (the inner peripheral portion 512A of the tubular body 512) and an outer peripheral portion 516A of the piston portion 516. The outer peripheral portion 516A of the piston portion 516 is configured such that the outer edge of the cross section in the direction orthogonal to the predetermined direction (longitudinal direction of the cylinder portion 511) is a non-circular outer surface portion. A cylindrical surface portion 16C similar to the cylindrical surface portion 16C (Fig. 9(B)) of the first embodiment and a convex portion 516D on the piston portion side are formed in the outer peripheral portion 516A. The convex portion 516D on the piston portion side is formed in a rib shape in which a predetermined range (for example, the entire range) of the thickness direction of the piston portion 516 is formed to have a fixed width. The inner peripheral portion 512A of the cylindrical body 512 of the cylinder portion 511 is configured such that the inner edge of the cross section in the direction orthogonal to the predetermined direction (longitudinal direction of the cylinder portion 511) is non-circular and the outer peripheral portion 516A (non-circular The outer surface portion is a non-circular inner surface portion that is fitted. In the inner peripheral portion 512A, a cylindrical surface portion 12C similar to the cylindrical surface portion 12C (Fig. 9(B)) of the first embodiment and a groove portion 512D on the cylinder portion side are formed. The groove portion 512D on the cylinder portion side is recessed toward the outer side of the cylinder portion 511 and extends in the longitudinal direction of the cylindrical body 512, and substantially the entire range including the longitudinal direction is formed in a linear shape. The inner surface of the cylindrical surface portion 12C is configured as a curved surface and is formed to be fitted to the cylindrical surface portion 16C. The convex portion 516D on the piston portion side is formed to be fitted to the groove portion 512D on the cylinder portion side.

In the restricting portion 580 configured as described above, when the piston portion 516 moves, the cylindrical surface portion 16C moves along the cylindrical surface portion 12C, and the convex portion 516D on the piston portion side moves along the groove portion 512D on the cylinder portion side. Further, in the range in which the piston portion 516 is movable, the relative position of the convex portion 516D with respect to the cylindrical body 512 (the position in the circumferential direction centered on the center line L1) is always maintained at the position of the groove portion 512D on the cylinder portion side. . Therefore, the piston portion 516 becomes unable to relatively rotate with respect to the cylindrical body 512. therefore, The rod portion 13 integrated with the piston portion 516 is prevented from relatively rotating with respect to the cylinder portion 511 including the cylindrical body 512, and is stopped from rotating.

<Embodiment 6>

Next, a damper device according to a sixth embodiment and an anti-tip device using the damper device will be mainly described with reference to Figs. 14 and 15 . As shown in Fig. 15 (B), in the damper device 610 of the sixth embodiment and the anti-tip device using the damper device, the piston portion 616 does not have the groove portion 16D on the piston portion side (Fig. 9(B)) and is circumferentially oriented. The whole portion is set as the cylindrical surface portion 616D, and is different from the piston portion 16 of the first embodiment. The cylindrical body 612 is different from the cylindrical body 12 of the first embodiment in that the convex portion 12D (Fig. 9(B)) is not present and the entire circumferential direction is the cylindrical portion 612D. The rod portion 613 is changed to a portion having a non-circular shaft portion 613A instead of the circular shaft portion 13A (Fig. 9(B)), and is different from the rod portion 13 of the first embodiment. The rod guiding portion 617 is changed to a portion having a non-circular through-hole portion 617A instead of the circular through-hole portion 17A (Fig. 9(A)), and is different from the rod guiding portion 17 of the first embodiment. The damper device 610 of the sixth embodiment and the anti-tip device using the damper device are different from the damper device 10 and the anti-tip device 1 of the first embodiment shown in Fig. 1 and the like, and other configurations and embodiments are different. The damper device 10 of 1 and the anti-tip device 1 are the same. Therefore, the configuration of the configuration shown in FIGS. 1 to 9 and the configuration described in the first embodiment is the same as that of the first embodiment except for the configuration, and detailed description thereof will be omitted. Further, the damper device 610 of Figs. 14 and 15 has the same configuration as that of the first embodiment, and is denoted by the same reference numerals as those of the first embodiment. In addition, in FIG. 15(B), the restriction hole 16A of FIG. 14, the connection passage 16E, etc. are abbreviate|omitted.

The damper device 610 shown in Figs. 14 and 15 is provided with a cylinder portion 611. The piston portion 616 and the rod portion 613.

The cylinder portion 611 is configured as a tubular body and is formed in a long shape extending in a predetermined direction (longitudinal direction of the damper device 610). The cylinder portion 611 includes a cylindrical body 612, a rod guide portion 617, and a joint portion (not shown). The tubular body 612 extends in a predetermined direction (direction of the center line L1), and one end portion (upper end portion) is configured as an opening portion, and the other end portion (lower end portion) is provided with a bottom portion 612A. The cylindrical body 612 is a cylindrical body having a bottom portion, and covers a substantially whole body in the longitudinal direction (excluding the range other than the bottom portion 612A), and a cross-sectional shape in a direction orthogonal to the longitudinal direction (the direction of the center line L1) is formed as 15 (A), (B) shape. The inner peripheral portion of the cylindrical body 612 is configured as a cylindrical surface portion 612D. The inner circumferential surface of the cylindrical surface portion 612D has a cylindrical surface centered on the center line L1 as a whole.

A joint portion that is coupled to the first base portion (a base portion having the same structure as the first base portion 30A shown in FIGS. 1 and 2) is provided on one side in the longitudinal direction of the cylinder portion 611 ( A joint portion having the same structure as the joint portion 15 shown in Figs. 1 and 2 and the like. The joint portion is fixed to the bottom portion 612A of the tubular body 612 by the same structure as the structure of the first embodiment (the structure fixed to the tubular body 12). The damper device 610 is fixed to the joint portion of the tubular body 612, and is connected to the same structure as the anti-tip device 1 shown in Figs. 1, 2, etc., and is connected as shown in Figs. 1, 2, and the like. The first base portion of the first base portion 30A has the same structure.

The rod guide portion 617 is fixed to the opening end portion provided on the other side (upper end side) of the longitudinal direction of the tubular body 612 in a fitted state. The rod guide portion 617 is disposed such that the opening end portion of the closed cylindrical body 612 is apart from the shaft portion 613A, and a through hole portion 617A as shown in Fig. 15(A) is formed in the vicinity of the center portion. A shaft portion 613A of the rod portion 613 is inserted into the through hole portion 617A.

The piston portion 616 is disposed inside the cylinder portion 611 and is configured to be slidable along the longitudinal direction (predetermined direction) of the cylinder portion 611. The piston portion 616 has the same configuration as the piston portion 16 of the first embodiment except that the portion of the groove portion 16D (Fig. 9(B)) is changed to the cylindrical portion, and is formed in a columnar shape and has a predetermined direction (damper device). The longitudinal direction of 610 is set to the thickness direction. The outer peripheral portion of the piston portion 616 is configured as a cylindrical surface portion 616D. The cylindrical surface portion 616D is entirely cylindrical, and the outer peripheral surface is a cylindrical surface centered on the center line L1. The piston portion 616 is fixed so as not to be relatively displaced with respect to the rod portion 613.

The shaft portion 613 differs from the first embodiment only in the shaft portion 613A, and the portion other than the shaft portion 613A is the same as that in the first embodiment. The joint portion to be fixed to the shaft portion 613A is the same as the joint portion 15 of the first embodiment (the joint portion 15 connected to the shaft portion 13A). The rod portion 613 is inserted into the through hole portion 617A shown in FIG. 15(A), and extends across the inside and the outside of the cylinder portion 611, and the one end portion is fixed to the piston portion 616 so as not to be rotatable relative thereto, and the other end portion is coupled to the other end portion. The second base portion (not shown). In the joint portion of the rod portion 613, the second base portion having the same structure as the second base portion 30B of the anti-tip device 1 shown in Fig. 1 and the like is connected to the same structure as the anti-tip device 1 of the first embodiment. .

The restricting portion 680 restricts relative rotation of the rod portion 613 with respect to the cylinder portion 611 between the rod portion 613 and the rod guide portion 617. The restricting portion 680 has an outer peripheral portion 614 of the rod portion 613 and a through hole portion 617A of the rod guiding portion 617. The outer peripheral portion 614 of the rod portion 613 is configured such that the outer edge of the cross section in the direction orthogonal to the predetermined direction is a non-circular outer surface portion, and specifically includes a cylindrical surface portion 614A and a flat portion 614B. The cylindrical surface portion 614A corresponds to an example in which the outer surface is configured as a curved surface portion on the outer peripheral side of the curved surface, and the outer surface is formed as a portion of the cylindrical surface centered on the center line L1. The flat portion 614B corresponds to a flat surface on the outer peripheral surface of the flat surface An example of a face is a portion in which the outer surface is formed as a part of a plane parallel to the center line L1. The inner peripheral portion of the through hole portion 617A is configured such that the inner edge of the cross section orthogonal to the predetermined direction is a non-circular inner surface that is non-circular and is fitted to the outer peripheral portion 614 (non-circular outer surface portion). unit. The inner peripheral portion of the through hole portion 617A includes a cylindrical surface portion 618A and a flat portion 618B. The outer surface of the cylindrical surface portion 618A is formed as a portion of a cylindrical surface centered on the center line L1. The cylindrical surface portion 618A corresponds to an example of a curved surface portion on the inner circumferential side, and the inner surface is configured as a curved surface to be fitted to the cylindrical surface portion 614A (the curved surface portion on the outer circumferential side). The flat portion 618B is a portion where the outer surface is formed as a part of a plane parallel to the center line L1. The flat portion 618B corresponds to an example of a flat surface portion on the inner peripheral side, and is configured such that the inner surface is formed as a flat surface and faces the flat portion 614B (flat surface on the outer peripheral side) and extends in a predetermined direction.

When the rod portion 613 is moved, the outer peripheral portion 614 (non-circular outer surface portion) of the shaft portion 613A is along the inner peripheral portion (non-circular inner surface portion) of the through hole portion 617A. mobile. Specifically, the cylindrical surface portion 614A moves along the cylindrical surface portion 618A, and the flat portion 614B moves along the flat portion 618B. Therefore, in the range in which the rod portion 613 is movable, the relative position of the flat portion 614B with respect to the rod guiding portion 617 (the position in the circumferential direction centered on the center line L1) is always maintained at the position opposite to the flat portion 618B. . Therefore, the rod portion 613 becomes unable to rotate relative to the cylinder portion 611 including the rod guide portion 617, and is stopped from rotating.

According to the damper device 610 of the present configuration, the relative rotation of the rod portion 613 with respect to the cylinder portion 611 can be directly restricted between the two, and the influence on the other portions due to the restriction can be suppressed.

Further, according to the present configuration, the outer peripheral portion of the rod portion 613 and the inner peripheral portion of the through hole portion 617A of the rod guiding portion 617 are each formed into a simple configuration having a non-circular cross section. The relative rotation of the rod portion 613 with respect to the cylinder portion 611 can be more reliably restricted. Further, since the rod portion 613 or the rod guiding portion 617 is a processing target portion for stopping the rotation, the processing can be easily performed, and the processing portion for stopping the rotation can be further used to be small.

Further, the anti-tip device 1 is disposed so as to be in contact with the first base portion (see the first base portion 30A of FIG. 1) in which the damper device 610 is placed in contact with the damper device 610 (see FIG. 1). It is formed in the form of the second base portion of the ceiling (see the second base portion 30B of Fig. 1). The anti-tip device may be attached to the furniture in a state in which the orientation of the first base portion connected to the cylinder portion 611 and the orientation of the second base portion connected to the rod portion 613 are maintained in a fixed relationship. Between (item) and the ceiling.

<Embodiment 7>

Next, a damper device according to a seventh embodiment and an anti-tip device using the damper device will be described mainly with reference to Figs. 16 and 17 . As shown in Figs. 17(A) and (B), the damper device 710 of the seventh embodiment and the anti-tip device using the damper device are eccentrically provided with different shapes instead of the rod portion 613 (Fig. 15(B)). The portion of the rod portion 713 is different from the rod portion 613 of the sixth embodiment. Further, the portion in which the rod guiding portions 717 having different shapes are provided eccentrically only in place of the rod guiding portion 617 (Fig. 15(A)) is different from the rod guiding portion 617 of the sixth embodiment. In the cylinder portion 711, the cylindrical body 612 and the joint portion (not shown) are the same as those in the sixth embodiment. The position of the piston portion 716 in which only the rod portion is coupled is different from that in the sixth embodiment, and the piston portion 616 (FIG. 15 (B)) of the sixth embodiment is the same. The damper device 710 according to the seventh embodiment and the anti-tip device using the damper device have only the same configuration as the sixth embodiment, and the configuration other than the above is the same as that of the sixth embodiment. Therefore, the detailed description of the same portions as those of the sixth embodiment will be omitted. Figure 16, Figure 17 damping The portion having the same configuration as that of the first embodiment is shown by the same reference numerals as those of the first embodiment, and the same configuration as that of the sixth embodiment is shown by the same reference numerals as those of the sixth embodiment. Further, in Fig. 17(B), the restriction hole, the connecting passage, and the like are omitted.

In the damper device 710 shown in Fig. 16 and Fig. 17, the cylindrical body 612 similar to that of the sixth embodiment is used, and the other side (upper end side) of the longitudinal direction of the cylindrical body 612 is shown in Fig. 17(A). The opening end portion formed is fixed with the rod guiding portion 717 in a fitted state. The rod guide portion 717 is disposed such that the opening end portion of the closed cylindrical body 612 is apart from the shaft portion 713A, and a through hole portion 717A as shown in Fig. 17(A) is formed in the vicinity of the center portion. A shaft portion 713A of the rod portion 713 is inserted into the through hole portion 717A.

The restricting portion 780 restricts the relative rotation of the rod portion 713 with respect to the cylinder portion 711 between the rod portion 713 and the rod guiding portion 717. The restricting portion 780 has an outer peripheral portion of the rod portion 713 (outer peripheral portion 714 of the shaft portion 713A) and a through hole portion 717A of the rod guide portion 717. Specifically, in the plane direction orthogonal to the longitudinal direction of the cylinder portion 711 (the direction corresponding to the center line L1 in the predetermined direction), the center L2 of the through hole portion 717A is from the center of the piston portion 716 (the position of the center line L1) Deviation. Further, in the plane direction, the center L3 of the rod portion 713 is deviated from the center of the piston portion 716 (the position of the center line L1). The center L2 of the through hole portion 717A and the center L3 of the rod portion 713 are on the same straight line parallel to the center line L1.

In this manner, the restricting portion 780 is eccentrically provided with the rod portion 713, and the relative position of the rod portion 713 in the circumferential direction (the position in the circumferential direction centering on the center line L1) is always held at the position of the through hole portion 717A. Therefore, the rod portion 713 becomes unable to rotate relative to the cylinder portion 711 including the rod guide portion 717, and is stopped. move.

According to this configuration, by arranging the center of the rod portion 713 and the center of the through hole portion 717A from the center of the piston portion 716 (the position of the center line L1) to make it eccentric, the rod portion 13 can be more reliably restricted. The relative rotation of the cylinder portion 711.

<Embodiment 8>

Next, a damper device according to the eighth embodiment and an anti-tip device using the damper device will be mainly described with reference to Figs. 18 and 19 . As shown in Figs. 18 and 19, in the damper device 810 of the eighth embodiment and the anti-tip device using the damper device, the rod portion is formed in a different shape in place of the rod portion 613 (Fig. 15(B)). The portion of the plurality of rod portions 813A and 814B is different from that of the sixth embodiment. Further, the rod guide portion is different from the sixth embodiment in that the rod guide portion 817 having a different shape is provided instead of the rod guide portion 617 (Fig. 15(A)). In the cylinder portion 811, the configuration of the cylindrical body 612 and the joint portion fixed to the tubular body 612 is the same as that of the sixth embodiment. The piston portion 816 differs from the sixth embodiment only in the portion where the rod portions 813A and 814B are coupled. This portion is the same as the piston portion 616 (Fig. 15(B)) of the sixth embodiment. The damper device 810 of the eighth embodiment and the anti-tip device using the damper device have only the same configuration as the sixth embodiment, and the other configurations are the same as those of the sixth embodiment. Therefore, the detailed description of the same portions as those of the sixth embodiment will be omitted. The damper device 810 of Figs. 18 and 19 has the same configuration as that of the first embodiment, and is the same as that of the first embodiment, and the same configuration as that of the sixth embodiment is based on the sixth embodiment. The same symbol is displayed. Further, in Fig. 19(B), the restriction hole, the connecting passage, and the like are omitted.

In the damper device 810 shown in Figs. 18 and 19, the cylindrical body 612 similar to that of the sixth embodiment is used, and as shown in Fig. 19(A), the long side of the cylindrical body 612 is shown. The opening end portion formed on the other side (upper end side) is fixed to the rod guiding portion 817 in a fitted state. The rod guide portion 817 is disposed so as to close the opening end portion of the cylindrical body 612 except for the shaft portions 813X and 813Y, and a plurality of through hole portions 817A and 817B as shown in Fig. 19(A) are formed. The plurality of through hole portions 817A and 817B extend in a predetermined direction (longitudinal direction of the cylinder portion 811), and the shaft portions 813X and 813Y of the rod portions 813A and 813B are inserted.

In each of the shaft portions 813X and 813Y of the rod portions 813A and 813B, the joint portion similar to the joint portion 15 of the first embodiment (the joint portion 15 which is a part of the rod portion 13 shown in Fig. 1) is fixed. For example, the two shaft portions 813X and 813Y are fixed to the same joint portion, and the joint portion is, for example, the hole direction of the through hole (the through hole similar to the through hole 15A shown in FIG. 3 and the like), and the two shaft portions 813X and 813Y. The direction of the axial orthogonality. The joint portion that is fixed to the two shaft portions 813X and 813Y is connected to the second base portion (the same base as the second base portion 30B shown in Fig. 1 and the like) in the same connection structure as in the first embodiment. Seat).

The restricting portion 880 restricts relative rotation of the rod portions 813A, 813B with respect to the cylinder portion 811 between the rod portions 813A, 813B and the rod guide portion 817. The restricting portion 880 has two shaft portions 813X and 813Y of the rod portions 813A and 813B, and through-hole portions 817A and 817B through which the plug portions 813A and 813B are inserted, and the outer peripheral portions and the two through holes of the two shaft portions 813X and 813Y. The inner peripheral portions of the portions 817A and 817B are formed. In other words, the relative positions of the two shaft portions 813X and 813Y around the center line L1 in the circumferential direction are restricted by the two through hole portions 817A and 817B, and the two shaft portions 813X and 813Y are not configured. The cylinder portion 811 is relatively rotated with respect to the cylinder portion 811.

According to this configuration, by providing a plurality of lever portions 813A and 813B and a plurality of through hole portions 817A and 817B, the rod portion can be more reliably restricted. The relative rotation of 813A, 813B with respect to the cylinder portion 811. Further, since the rotation is stopped by the use of a plurality of portions, it is more advantageous to stop the rotation when the force in the circumferential direction is strongly applied.

<Embodiment 9>

Next, the ninth embodiment will be described mainly with reference to Fig. 20 . The anti-tip device 901 shown in Fig. 20 is provided with a damper body 902 instead of the damper device 10 (Fig. 1 and the like). Further, the anti-tip device 901 is provided with the first base portion 930A instead of the first base portion 30A (FIG. 1 and the like), and the second base portion 930B is provided instead of the second base portion 30B (FIG. 1 and the like). . Further, a restriction portion 980 is attached to the anti-tip device 901. The anti-tip device 901 differs from the anti-tip device 1 of the first embodiment in these portions. Further, the anti-tip device 901 of Fig. 20 is the same as the anti-tip device 1 (Fig. 1 and the like) of the first embodiment, and is shown by the same reference numerals as those of the anti-tip device 1 of the first embodiment.

In the anti-tip device 901 shown in FIG. 20, the damper device 910 includes a damper body 902 including a cylinder portion 911, a piston portion (not shown), and a rod portion 13; and a restricting portion 980.

In the damper body 902 shown in Fig. 20, the cylinder portion 911 has a configuration similar to that of the cylinder portion 11 shown in Fig. 9(B), and only the convex portion 12D (Fig. 9(B)) is not provided and the inner circumference is not provided. The entire surface is configured such that the cylindrical portion is different from the cylinder portion 11. The piston portion (not shown) disposed in the damper body 902 has a configuration similar to that of the piston portion 16 (Fig. 9(B)) shown in Fig. 9(B), and only the groove portion 16D is not provided and the outer peripheral surface is provided. The portion which is configured as a cylindrical surface as a whole is different from the piston portion 16. The damper body 902 differs from the damper device 10 of the first embodiment (Fig. 1, Fig. 9(B), etc.) in such a configuration, and the like. It is the same as the damper device 10 except for the other.

The cylinder portion 911 is formed in a tubular shape and has an elongated shape extending in a predetermined direction, and a connecting portion (joining portion 15) connected to the first base portion 930A is provided on one side in the longitudinal direction. A rod guide portion (not shown) having a through hole portion is provided on the other side in the longitudinal direction of the cylinder portion 911. The rod guide portion has the same configuration as the rod guide portion 17 of the first embodiment shown in Fig. 9(A), and is formed in the same manner as the through hole portion 17A (Fig. 9(A)) shown in the first embodiment. Through hole portion. The structure in which the joint portion 15 provided at the lower end portion of the cylinder portion 911 and the first base portion 930A are connected is the same as the structure of the joint joint portion 15 and the first base portion 30A in the first embodiment.

The piston portion is disposed inside the cylinder portion 911 and is configured to move in a predetermined direction (longitudinal direction of the cylinder portion 911). The rod portion 13 has the same configuration as the rod portion 13 (FIG. 1 and the like) of the first embodiment, and is inserted into a through hole portion (not shown) provided at the upper end portion of the cylinder portion 911, and spans the cylinder portion. Internal and external to 911. One end of the rod portion 13 is coupled to a piston portion disposed in the cylinder portion 911, and the other end portion of the rod portion 13 is coupled to the second base portion 930B. The structure in which the joint portion 15 and the second base portion 930B are provided at the upper end portion of the rod portion 13 is connected, and the structure of the joint portion 15 and the second base portion 30B in the first embodiment is the same.

The first base portion 930A shown in FIG. 20 is provided only with a portion that is a portion that rotatably connects the first member 982 to the first coupling portion 981, and the first base portion 30A of the first embodiment (FIG. 1 and the like). The configuration is the same as that of the first base portion 30A except for this configuration. The second base portion 930B is provided only with a portion that is a portion of the second base member 984 that is rotatably coupled to the second base portion 984, and is different from the second base portion 30B (FIG. 1 and the like) of the first embodiment. The second base portion 30B is the same.

The restricting portion 980 restricts the rod portion 13 from rotating relative to the cylinder portion 911 turn. The restricting portion 980 is connected to the base portion main body 931A which is a part of the first base portion 930A and the base portion main body 931B which is a part of the second base portion 930B. The base portion body 931A corresponds to an example of the first target portion. The base portion main body 931B corresponds to an example of the second target portion.

The restricting portion 980 is configured as a restricting mechanism that restricts relative rotation of the second base portion 930B (second target portion) with respect to the first base portion 930A (first target portion). The restricting portion 980 includes a first member 982 that is rotatably coupled to the first base portion 930A and a second member 984 that is rotatably coupled to the second base portion 930B, and is connected to the first base portion. A link mechanism in which the operation of the 930A and the second base portion 930B is linked. The first member 982 is configured, for example, as a plate-shaped and long-sized member, and is coupled to the base portion main body 931A of the first base portion 930A so as to be rotatable about the central axis G1. The first member 982 relatively moves in a planar direction orthogonal to the central axis G1 with respect to the base portion body 931A. The second member 984 is configured, for example, as a plate-shaped and long-sized member, and is coupled to the base portion main body 931B of the second base portion 930B so as to be rotatable about the central axis G2. The second member 984 relatively moves in a planar direction orthogonal to the central axis G2 with respect to the base portion body 931B. The first member 982 and the second member 984 are coupled to each other in such a manner that one of them can rotate relative to the other.

The central axis G3 when the second member 984 is relatively rotated with respect to the first member 982 is held substantially parallel to the central axes G1 and G2. Further, the center axes G1, G2, and G3 are held substantially in parallel with the central axes of the bolts 45 provided on the first base portion 930A and the second base portion 930B. In this state, the first base portion 930A, the second base portion 930B, the first member 982, and the second member 984 are located in the bolt 45 provided in the first base portion 930A. The central axis Orthogonal to a given plane. The first base portion 930A, the second base portion 930B, the first member 982, and the second member 984 are oriented in the longitudinal direction of each of the first base portion 930A, the first member 982, and the second member 984 along the predetermined plane or with respect to the predetermined plane described above. The slight tilts are displaced toward one side. These are limited such that the orientation of the respective longitudinal directions is not greatly inclined with respect to the aforementioned predetermined plane. According to this configuration, the mechanism (the restricting portion 980 of the regulating member) disposed on the outer side of the cylinder portion 911 and the rod portion 13 can more reliably restrict the relative rotation of the rod portion 13 with respect to the cylinder portion 911. .

The anti-tip device 901 has one or more of the central axes G1, G2, and G3 and the central axes of the bolts 45 provided in the first base portion 930A and the second base portion 930B, and may be relative to the other axes. Slightly deformed slightly. Such deformation may also occur due to the clearance of the joint portion or the bending of the member.

<Embodiment 10>

Next, a tenth embodiment will be described mainly with reference to Fig. 21 . The anti-tip device 1001 shown in FIG. 21 is provided with a damper main body 1002 instead of the damper device 10 (FIG. 1 and the like), and a second base portion 1030B is provided instead of the second base portion 30B (FIG. 1 and the like). Further, a restriction portion 1080 is attached to the anti-tip device 1001. The anti-tip device 1001 differs from the anti-tip device 1 of the first embodiment in these portions. Further, the anti-tip device 1001 of Fig. 21 has the same configuration as that of the anti-tip device 1 (Fig. 1 and the like) of the first embodiment, and is shown by the same reference numerals as those of the anti-tip device 1 of the first embodiment. For example, in the anti-tip device 1001 shown in FIG. 21, the first base portion 30A has the same configuration as the first base portion 30A (FIG. 1 and the like) of the first embodiment. The second base portion 1030B is provided with only a portion of the connection structure portion 1090 that is a part of the connection shaft member 1086, and is different from the second base portion 30B (FIG. 1 and the like) of the first embodiment, and the second base portion is different from the second base portion. The part 30B (Fig. 1 and the like) is the same.

In the anti-tip device 1001 shown in FIG. 21, the damper device 1010 includes a damper body 1002 including a cylinder portion 1011, a piston portion (not shown), and a rod portion 13; and a restricting portion 1080. The damper main body 1002 differs from the damper main body 902 of the ninth embodiment only in that the guide portion 1082 is added.

The restricting portion 1080 restricts the rod portion 13 from rotating relative to the cylinder portion 1011. The restricting portion 1080 includes a guide portion 1082 that is fixed to the cylinder portion 1011 and a shaft member 1086 that is relatively movable relative to the guide portion 1082. The guide portion 1082 may be formed as an integral member with the cylinder portion 1011 corresponding to the first target portion, or may be configured as a different member and fixed by a fastening member or the like. A hole portion 1084 extending in parallel with the longitudinal direction of the cylinder portion 1011 is formed in the guide portion 1082, and a shaft portion 1087 of the shaft member 1086 is inserted into the hole portion 1084.

The shaft-shaped member 1086 includes a shaft portion 1087 that is formed in a columnar shape and has a rod shape, and a mounting portion 1088 that is coupled to an upper end portion of the shaft portion 1087. The shaft member 1086 is rotatably coupled to the second base portion 1030B corresponding to the second target portion by the attachment portion 1088 provided at the upper end portion. In a state in which the shaft portion 1087 is inserted into the hole portion 1084 of the guide portion 1082, the shaft portion 1087 and the shaft portion 13A of the rod portion 13 are always held in parallel, and the shaft portion 1087 is held in the parallel state. The configuration is relatively moved with respect to the cylinder portion 1011.

In the anti-tip device 1001 thus constructed, when the damper body 1002 is contracted by the relative movement of the rod portion 13 with respect to the cylinder portion 1011, the rod portion 13 and the shaft member 1086 are moved in parallel. . When the rod portion 13 and the shaft member 1086 are located, the central axis of each of the bolts 45 of the first base portion 30A and the second base portion 30B and the rotation axis G4 of the shaft member 1086 are maintained at The parallel state, or any one or a plurality of axes are slightly inclined from the parallel state. In this configuration, the mechanism (the restriction portion 1080 configured as the restriction member) disposed on the outer side of the cylinder portion 1011 and the rod portion 13 can more reliably restrict the relative rotation of the rod portion 13 with respect to the cylinder portion 1011.

The present invention is not limited to the embodiments described in the above description and the drawings, and the following embodiments are also included in the technical scope of the present invention.

(1) In the first to tenth embodiments, although the anti-tip device is attached to the furniture, it may be attached to an article such as a bookshelf or a refrigerator that may be tilted due to an earthquake or the like.

(2) In the first to tenth embodiments, the anti-tip device is attached to a furniture that is placed on the floor surface with the back surface facing the wall surface, but may be attached to the floor without being adjacent to the wall surface. Furniture on the surface, etc.

(3) In the first to tenth embodiments, the compression damper is used. However, the expansion damper may be a tensile compression damper as long as it exhibits a predetermined damping force during the contraction operation.

(4) In the first to tenth embodiments, the damper that encloses the hydraulic oil and the compressed gas in the cylinder is used, but the hydraulic pressure of the other liquid may be used as long as it exhibits a predetermined damping force during the contraction operation. Dampers can also be other forms of dampers.

(5) In the first to tenth embodiments, the expansion force of the compressed gas is applied to the stretching direction by enclosing the compressed gas in the cylinder, but the force acting in the stretching direction may be generated by other means.

(6) In the first to tenth embodiments, the anti-tip device includes the drop preventing portion, but the drop preventing portion may not be provided. Further, the fall prevention portion may be integrally formed on the article side base portion.

(7) In the first to tenth embodiments, the anti-tip device has an angle restricting portion, However, it is also possible to have no angle restriction. Further, the angle restricting portion may be integrally formed in the article side base portion or the damper cylinder.

(8) The configurations of the first to fifth embodiments may be combined with the configurations of the sixth to eighth embodiments. The configurations of the ninth and tenth embodiments may be combined with the combined configuration or any of the first to eighth embodiments.

(9) In the configuration of the ninth embodiment, the first member 982 of the restricting portion 980 may be rotatably coupled to the cylinder portion, and the second member 984 may be rotatably coupled to the rod portion 13.

1‧‧‧Anti-dumping device

10‧‧‧damper

11‧‧‧ cylinder

12‧‧‧Cylinder

13‧‧‧ rod

13A‧‧‧Axis

15‧‧‧Intersection

30A‧‧‧1st base section

30B‧‧‧2nd base section

31‧‧‧Base body

37‧‧‧Slip-stop

41‧‧‧Ditch

41A‧‧‧Bottom of the ditch

41B‧‧‧ inner wall

42‧‧‧Depression

45‧‧‧Bolts (rotating shaft members)

50‧‧‧Drop Prevention Department

51‧‧‧Connecting Department

51A‧‧‧Card

53‧‧‧Pendant

70‧‧‧Angle Limitation

71‧‧‧Restrictions

71A‧‧‧Support

73‧‧‧Support

73A‧‧‧1st support

73B‧‧‧2nd support

C‧‧‧Ceiling

F‧‧‧Furniture (items)

R1‧‧‧ rib

W‧‧‧ wall

Claims (15)

A damper device including a cylinder portion that is formed in a tubular shape and that extends in a predetermined direction, and is provided with a connection portion that is coupled to the first base portion on one side of the predetermined direction, and is a rod guiding portion having a through hole penetrating portion is provided on the other side of the predetermined direction; the piston portion is disposed inside the cylinder portion and moves in the predetermined direction; and the rod portion is inserted into the through hole portion And extending across the inside and the outside of the cylinder portion, one end portion is coupled to the piston portion, and the other end portion is coupled to the second base portion; and a restricting portion that restricts rotation of the rod portion relative to the cylinder portion. The damper of claim 1, wherein the restricting portion restricts relative rotation of the piston portion with respect to the cylinder portion between the piston portion and the cylinder portion. The damper device of claim 2, wherein the restricting portion has an inner peripheral portion of the cylinder portion and an outer peripheral portion of the piston portion, and an inner peripheral portion of the cylinder portion is formed to protrude toward an inner side of the cylinder portion In the convex portion extending in the predetermined direction, a groove portion on the piston portion side that extends in the predetermined direction and is fitted to the convex portion is formed on the outer peripheral portion of the piston portion. The damper device according to claim 2, wherein the restricting portion has an inner peripheral portion of the cylinder portion, an outer peripheral portion of the piston portion, a protruding member protruding from an outer peripheral surface of the piston portion, and a peripheral surface from the outer peripheral portion of the piston portion a potential energy adding portion that adds a potential energy to the protruding member, a groove portion on the cylinder portion side extending in the predetermined direction is formed in an inner peripheral portion of the cylinder portion, and a hole portion is formed in a peripheral portion of the piston portion. The protruding member protruding from the hole portion is fitted to the groove portion on the cylinder portion side. The damper device according to claim 2, wherein the restricting portion has an outer peripheral portion of the piston portion and an inner peripheral portion of the cylinder portion, and an outer peripheral portion of the piston portion has a cross-sectional outer edge in a direction orthogonal to the predetermined direction a non-circular outer surface portion, wherein the inner peripheral portion of the cylinder portion has a non-circular inner edge portion in a direction orthogonal to the predetermined direction, and is non-circular and non-circularly fitted to the non-circular outer surface portion The inner surface portion. The damper device of claim 5, wherein the outer peripheral portion of the piston portion is provided with a first outer surface portion having an outer surface configured as a curved surface, and a second outer surface portion having an outer surface configured as a flat surface, The inner peripheral portion of the cylinder portion is provided with a first inner surface portion and an inner surface that are formed as a curved surface and that are fitted to the first outer surface portion, and are formed as a flat surface and face the second outer surface portion And a second inner surface portion that extends in the predetermined direction. The damper device according to claim 5, wherein the inner peripheral portion of the cylinder portion has an elliptical inner surface portion having an elliptical outer edge in a cross section orthogonal to the predetermined direction, and the outer peripheral portion of the piston portion has the above-described An elliptical inner surface portion is fitted, and an outer surface portion having an elliptical elliptical outer surface is formed on the outer edge of the cross section orthogonal to the predetermined direction. The damper device according to claim 5, wherein a groove portion on the cylinder portion side that is recessed toward the outer side of the cylinder portion and extends in the predetermined direction is formed in an inner peripheral portion of the cylinder portion, and a peripheral portion is formed on a peripheral portion of the piston portion A convex portion on the piston portion side that is fitted to the groove portion on the cylinder portion side. The damper device of claim 1, wherein the restricting portion restricts relative rotation of the rod portion with respect to the rod guiding portion between the rod portion and the rod guiding portion. The damper device of claim 9, wherein the restricting portion has the above-mentioned rod portion In the outer peripheral portion and the through hole portion of the rod guiding portion, the outer peripheral portion of the rod portion has a non-circular outer surface portion in a cross section orthogonal to the predetermined direction, and the inner circumference of the through hole portion The inner portion of the cross section having a cross section orthogonal to the predetermined direction is a non-circular inner surface portion that is non-circular and is fitted to the non-circular outer surface portion. The damper device of claim 10, wherein the outer peripheral surface of the rod portion is provided with a curved surface portion whose outer surface is formed on the outer peripheral side of the curved surface, and a flat surface portion whose outer surface is formed as a peripheral surface of the flat surface, The inner peripheral portion of the rod guide portion is provided with a curved surface portion whose inner surface is formed as a curved surface and fitted to the curved surface portion on the outer peripheral side, and the inner surface is configured as a flat surface and is flat with the outer peripheral side A flat face on the inner peripheral side that faces the facing direction and extends in the predetermined direction. The damper device according to claim 9, wherein the restricting portion has the rod portion and the through hole portion of the rod guiding portion, and a center of the through hole portion deviates from the center in a plane direction orthogonal to the predetermined direction The center of the piston portion, and the center of the rod portion is offset from the center of the piston portion. The damper device of claim 9, wherein the restricting portion has a plurality of the through hole portions formed in the rod guiding portion, and each of the plurality of through hole portions is inserted into the plurality of through holes and connected to the piston portion a plurality of the above-mentioned rod portions. The damper device of claim 1, wherein the restricting portion is connected to each of a first target portion that is at least a portion of the cylinder portion or the first base portion, and the rod portion or the second base portion The second object portion of at least one of the portions includes a restriction mechanism that restricts the second target portion to the first portion Relative rotation of the object part. A damper device according to any one of claims 1 to 14, wherein the damper device is disposed between the article and the ceiling, and the first pedestal portion is abutted And disposed in any one of the article and the ceiling; and the second base portion is placed in contact with any one of the article and the ceiling.